summaryrefslogtreecommitdiff
path: root/macros/latex/contrib/eltex/man_en.tex
diff options
context:
space:
mode:
authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /macros/latex/contrib/eltex/man_en.tex
Initial commit
Diffstat (limited to 'macros/latex/contrib/eltex/man_en.tex')
-rw-r--r--macros/latex/contrib/eltex/man_en.tex1052
1 files changed, 1052 insertions, 0 deletions
diff --git a/macros/latex/contrib/eltex/man_en.tex b/macros/latex/contrib/eltex/man_en.tex
new file mode 100644
index 0000000000..b3892d0071
--- /dev/null
+++ b/macros/latex/contrib/eltex/man_en.tex
@@ -0,0 +1,1052 @@
+\documentstyle[a4,bezier]{article}
+
+\input{eltex1}
+\input{eltex2}
+
+\begin{document}
+\section{The instructions for the using the macro eltex 2.0}
+This is the version 2.0 of the macro \verb?eltex? for the drawing the
+circuit diagrams in \LaTeX . Here is the several differences on the
+comparison with the previous version.
+In the version 2.0 are the circuit symbols accordingly IEC 617-1 to 11.
+Here is the helpful grid for the easier placing of the circuit symbols
+and also the commands for the circuit symbols are different
+then in the previous version.
+Old and new version are not compatible.
+The reason for it is that in the praxis the commands had many
+parameters and the labels with the fixed coordinates mostly had to be
+placed in the different place in the drawing. The new macro
+contains some frequently used symbols "two times"
+with the shorter and longer leads. This is time saving when you draw
+the circuit diagram.
+When you have only small area there is also the symbol with shorter
+lead. The circuit symbols were created on the actual use
+for the making the education materials in the communication technics,
+circuit theory and electronics area. The size of macro is 100kB.
+Not to occupy many RAM during the compilation, the
+circuit symbols are distributed into several files eltex1 ... eltex7
+accordingly the area of interest.
+So you can use only several files and not all files.
+
+This principle of the drawing the circuit diagrams is not comfortable,
+it would be better to create some interactive graphical editor with the
+saving the (eltex) commands to the file.
+
+
+
+
+\section{The description of the commands}
+\subsection{Basic}
+This circuit symbols are contained in macro \verb?\eltex1? \\
+
+\noindent
+\verb?\grid{x}{y}?
+The command creates the grid with the step 10mm.
+x - width of the picture in cm, y - height of the picture in cm,
+only natural number.
+
+\subsubsection{Sources}
+
+\verb?\hsourcev?
+Ideal voltage source horizontally oriented.
+
+\noindent
+\verb?\hhsourcev?
+Ideal voltage source with reduced leads horizontally oriented.
+
+\noindent
+\verb?\vsourcev?
+Ideal voltage source vertically oriented.
+
+\noindent
+\verb?\vvsourcev?
+Ideal voltage source with reduced leads vertically oriented.
+
+\noindent
+\verb?\dsourcev{x}?
+Ideal voltage source diagonally oriented, x - letter U -
+up oriented, D - down oriented.
+
+\noindent
+\verb?\hsourcec?
+Ideal current source horizontally oriented.
+
+\noindent
+\verb?\hhsourcec?
+Ideal current source with reduced leads horizontally oriented.
+
+\noindent
+\verb?\vsourcec?
+Ideal current source vertically oriented.
+
+\noindent
+\verb?\vvsourcec?
+Ideal current source with reduced leads vertically oriented.
+
+\noindent
+\verb?\dsourcec{x}?
+Ideal current source diagonally oriented, x - letter U -
+up oriented, D - down oriented.
+
+\subsubsection{Resistors}
+\verb?\hrez{n}?
+Resistor horizontally oriented. Number n determines the type of
+the resistor.
+0 - basic symbol
+1 to 6 variable value resistor,
+7 - nonlinear dependent resistor,
+
+\noindent
+\verb?\hhrez{n}?
+Resistor with reduced leads horizontally oriented.
+
+\noindent
+\verb?\vrez{n}?
+Resistor vertically oriented.
+
+\noindent
+\verb?\vvrez{n}?
+Resistor with reduced leads vertically oriented.
+
+\noindent
+\verb?\drez{x}{n}?
+Resistor diagonally oriented x - letter U -
+up oriented, D - down oriented, n - number - type of the symbol,
+
+\noindent
+\verb?\ddrez{x}{n}?
+Resistor with reduced leads diagonally oriented.
+
+
+\subsubsection{Capacitors}
+\verb?\hcap{n}?
+Capacitor horizontally oriented. Number n type of the symbol.
+0 - basic symbol
+1, 4 variable capacitor
+
+
+\noindent
+\verb?\hhcap{n}?
+Capacitor with reduced leads horizontally oriented.
+
+\noindent
+\verb?\vcap{n}?
+Capacitor horizontally oriented.
+
+\noindent
+\verb?\vvcap{n}?
+Capacitor with reduced leads vertically oriented.
+
+\noindent
+\verb?\dcap{x}{n}?
+Capacitor diagonally oriented. x letter - U up
+oriented, D down oriented, n number - type of the symbol.
+
+
+
+\subsubsection{Inductors}
+\verb?\hturn{x}{n}?
+Two turns horizontally oriented, x - letter - U position up oriented,
+D down, n = 0 basic symbol, n = 1 variable inductor.
+
+
+\noindent
+\verb?\vturn{x}{n}?
+Two turns vertically oriented, x - letter - L position left oriented,
+R right, n = 0 basic symbol, n = 1 variable inductor.
+
+
+\noindent
+\verb?\hind{x}{n}?
+Inductor horizontally oriented, x - letter - U position up,
+D down, n = 0 basic symbol, n = 1 variable inductor.
+
+\noindent
+\verb?\hhind{x}{n}?
+Inductor with reduced leads horizontally oriented.
+
+\noindent
+\verb?\vind{x}{n}?
+Inductor vertically oriented, x - letter - L left position,
+R right, n = 0 basic symbol, n = 1 variable inductor.
+
+
+\noindent
+\verb?\vvind{x}{n}?
+Inductor with reduced leads vertically oriented.
+
+
+\noindent
+\verb?\dind{x}{y}{n}?
+Inductor diagonally oriented, Bezier macro must be selected,
+x - letter - U symbol up oriented,
+D down, y - letter - L turns left oriented, R right,
+n = 0 basic symbol, n = 1 variable inductor.
+
+
+
+\subsubsection{Cores}
+\verb?\hcore{n}{x}?
+Core horizontally oriented, x - letter - core type I iron F ferrite, n
+- natural number - length of the symbol in mm for (I) case,
+or member of the dashed lines for (F) case.
+
+\noindent
+\verb?\vcore{n}{x}?
+Core vertically oriented.
+
+\noindent
+\verb?\dcore{x}{n}{y}?
+Core diagonally oriented, x - letter - U symbol up,
+D symbol down, n - natural number - length of the symbol for (I) case,
+or number of the dashed lines for (F) case,
+y - core type I iron F ferrite.
+
+
+\noindent
+\verb?\simb{n}?
+Symbols of the mutual orientation of winding,
+n number 1 $\bullet$, 2 = $\Box$, 3 =
+$\triangle $.
+
+
+\subsubsection{Switches}
+\verb?\hswitch{n}?
+Switch horizontally oriented, n=0 switched on, 1 off.
+
+\noindent
+\verb?\vswitch{n}?
+Switch vertically oriented, n=0 switched on, 1 off.
+
+
+\noindent
+\verb?\hoswitch{x}{n}?
+Overswitch horizontally oriented x - letter - R right,
+L left, n=0 switched on, 1 off.
+
+\noindent
+\verb?\voswitch{x}{n}?
+Overswitch vertically oriented , x - letter - symbol U up,
+D down, n=0 switched on, 1 off.
+
+\subsubsection{Basic symbols}
+\verb?\node?
+connection of the leads.
+
+\noindent
+\verb?\pin?
+terminal
+
+\noindent
+\verb?\hwire{n}?
+wire in horizontal position, n length of the symbol in mm.
+
+
+\noindent
+\verb?\vwire{n}?
+wire in vertical position, n length of the symbol in mm.
+
+\noindent
+\verb?\dwire{x}{n}?
+wire in the diagonal position, x letter - position U up , D
+down, n length of the symbol.
+
+\noindent
+\verb?\cloop{x}{y}?
+Symbol for the simple loop (mesh), x letter- R clockwise orientation,
+L anticlockwise, y - text- label of the loop.
+
+\noindent
+\verb?\earth{x}?
+Earth, x - letter - position D down, U up, L left, R right.
+
+
+\noindent
+\verb?\chassis{x}?
+Chassis, x - letter - position D down, U up, L left, R right.
+
+
+\noindent
+\verb?\hmeasure{x}?
+Measuring instrument indicating horizontally oriented,
+x - text - symbol of the measured quantity.
+
+\noindent
+\verb?\hhmeasure{x}?
+Measuring instrument indicating horizontally oriented, reduced leads.
+
+\noindent
+\verb?\vmeasure{x}?
+Measuring instrument indicating vertically oriented,
+
+\noindent
+\verb?\vvmeasure{x}?
+Measuring instrument indicating vertically oriented, reduced leads.
+
+\noindent
+\verb?\osc{x}?
+Oscilloscope, x - letter - I indicating, R recording.
+
+\subsection{Semiconductors}
+
+This circuit symbols are contained in macro \verb?\eltex2? \\
+
+\noindent
+\verb?\graetz{x}?
+Diode bridge rectifier, x - letter - R plus pole right,
+L plus pole left.
+
+\noindent
+\verb?\hdiode{x}{y}?
+Diode horizontally oriented, x - letter - R cathode right, L
+cathode left, y - letter - C varicap, Z Zener diode, E Esaki diode, S
+Shottky diode, D LED, P photodiode, L laser diode,
+blanc letter - basic symbol,
+
+\noindent
+\verb?\vdiode{x}{y}?
+Diode vertically oriented, x - letter - U cathode up, D
+cathode down, y - letter - type of the diode.
+
+\noindent
+\verb?\ddiode{x}{y}?
+Diode diagonally oriented, x - letter - U symbol up,
+D down, y - letter - U cathode up, D down.
+
+
+\noindent
+\verb?\htriac{x}?
+Triac horizontally oriented, x - letter - gate
+A left down, B left up, C right down, D right up.
+
+
+\noindent
+\verb?\vtriac{x}?
+Triac vertically oriented, x - letter - gate
+A left down, B left up, C right down, D right up.
+
+
+\noindent
+\verb?\hthyristor{x}{y}?
+Thyristor horizontally oriented, x - letter - R cathode right, L
+left, y - gate
+A left down, B left up, C right down, D right up.
+
+
+\noindent
+\verb?\vthyristor{x}{y}?
+Thyristor vertically oriented, x - letter - U cathode up, D
+down, y - gate
+A left down, B left up, C right down, D right up.
+
+
+\noindent
+\verb?\dthyristor{x}{y}{z}?
+Thyristor diagonally oriented, x - letter - symbol U up,
+D down, y - U cathode up D down,
+z -gate
+A left down, B left up, C right down, D right up.
+
+
+\noindent
+\verb?\hdiac?
+Diac horizontally oriented.
+
+\noindent
+\verb?\vdiac?
+Diac vertically oriented.
+
+\noindent
+\verb?\opto{x}?
+Optocoupler horizontally oriented, x - letter - R
+transistor right, L left.
+
+\noindent
+\verb?\opamp{x}{y}?
+Operational amplifier, x - letter - output R right, L left,
+U up, D down, y - inverting input U up, D down, R
+right, L left.
+
+\noindent
+\verb?\ota{x}{y}{z}?
+Operational transconductance amplifier,
+x - letter - output R right, L left,
+U up, D down, y - inverting input U up, D down, R
+right, L left, z - letter Y OTA with linearising diodes, blanc -
+without diodes.
+
+\noindent
+\verb?\bota{x}{y}{z}?
+Balanced output transconductance amplifier, (x z y as in OTA)
+
+\noindent
+\verb?\bjt{x}{y}{z}{v}?
+Bipolar junction transistor, x - type of the conductivity
+N npn, P pnp, y -
+collector emitter R right, L left, U up, D down, z - emitter position
+R right, L left, U up, D down, v - symbol in the circle N no, Y yes.
+
+
+\noindent
+\verb?\jfet{x}{y}{z}{v}?
+JFET, x - letter - channel N or P, y - letter
+- position drain source R right, L left , U up, D down, z
+- letter - position source R right, L left, U up, D down, v -
+letter - circle Y yes, N (or blanc) no.
+
+
+\noindent
+\verb?\mos{x}{y}{z}{v}{w}{r}?
+MOS transistor, x - letter - channel N or P, y - letter
+- position drain source R right, L left , U up, D down, z
+- letter - position source R right, L left, U up, D down, v -
+letter - mode E enhancement, D depletion, w - number of the gates
+1 or 2, r - letter - circle Y yes, N (or blanc) no.
+
+\noindent
+\verb?\ujt{x}{y}{z}{v}?
+unijunction transistor (twobase diode),
+x - letter - emitter N or P, y - letter
+- circuit symbol position B1 B2, R right, L left , U up, D down, z
+- letter - position B1 - R right, L left, U up, D down, v -
+letter - circle Y yes, N (or blanc) no.
+
+\noindent
+\verb?\hall?
+Hall's generator
+
+\noindent
+\verb?\hmag?
+Magnistor horizontally.
+
+\noindent
+\verb?\vmag?
+Magnistor vertically.
+
+\noindent
+\verb?\hptc?
+Thermistor PTC horizontally.
+
+\noindent
+\verb?\vptc?
+Thermistor PTC vertically.
+
+\noindent
+\verb?\hntc?
+Thermistor NTC horizontally.
+
+\noindent
+\verb?\vntc?
+Thermistor NTC vertically.
+
+\noindent
+\verb?\hvar?
+Varistor horizontally.
+
+\noindent
+\verb?\var?
+Varistor vertically.
+
+\noindent
+\verb?\hprez?
+Photoresistor horizontally.
+
+\noindent
+\verb?\vprez?
+Photoresistor vertically.
+
+\noindent
+\verb?\hpelt?
+Peltier's cell horizontally.
+
+
+
+\subsection{Special circuits}
+
+This circuit symbols are contained in macro \verb?\eltex3? \\
+
+\noindent
+\verb?\deltaload? Load in the delta configuration.
+
+\noindent
+\verb?\starload? Load in the star configuration.
+
+\noindent
+\verb?\starsource? Sources in the star configuration.
+
+\noindent
+\verb?\neta \netb \netc \netd \nete? Elementary
+twoports configurations.
+
+\noindent
+\verb?\inet?
+I network.
+
+\noindent
+\verb?\gneta \gnetb?
+Gamma network.
+
+\noindent
+\verb?\lneta \lnetb?
+L network.
+
+\noindent
+\verb?\pineta \pinetb?
+$\pi$ network.
+
+\noindent
+\verb?\tneta \tnetb?
+T network.
+
+\noindent
+\verb?\xnet{n}?
+X network, n - number - 1 general impedances, 2
+symmetrical X network.
+
+\noindent
+\verb?\bhnet?
+Bridget H network.
+
+\noindent
+\verb?\hnet?
+H network.
+
+\noindent
+\verb?\btnet?
+Bridget T network.
+
+\noindent
+\verb?\ttnet?
+Double T network.
+
+\noindent
+\verb?\gyrator?
+Gyrator.
+
+\noindent
+\verb?\unistor{x}?
+Unistor, x - letter - orientation R right, L left, U up, D
+down.
+
+\noindent
+\verb?\flow{x}?
+Closed loop in the flowgraphs, x - letter - loop orientation U
+up, D down.
+
+\subsection{Electron tubes}
+
+This circuit symbols are contained in macro \verb?\eltex4? \\
+
+
+\noindent
+\verb?\diode{x}{y}?
+Diode, x - letter - filament Y yes, N (or blanc) no,
+y - letter - equipotential cathode Y yes, N (or blanc) no.
+
+\noindent
+\verb?\triode{x}{y}?
+Triode, x - letter - filament Y yes, N (or blanc) no,
+y - letter - equipotential cathode Y yes, N (or blanc) no.
+
+\noindent
+\verb?\tetrode{x}{y}?
+Tetrode, x - letter - filament Y yes, N (or blanc) no,
+y - letter - equipotential cathode Y yes, N (or blanc) no.
+
+\noindent
+\verb?\pentode{x}{y}{z}?
+Pentode, x - letter - filament Y yes, N (or blanc) no,
+y - letter - equipotential cathode Y yes, N (or blanc) no,
+z - letter - suppressor grid and cathode connection
+Y yes, N (or blanc) no.
+
+
+\noindent
+\verb?\heptode{x}{y}{z}?
+Heptode, x - letter - filament Y yes, N (or blanc) no,
+y - letter - equipotential cathode Y yes, N (or blanc) no,
+z - letter - cathode and
+suppressor grid and screen grids g2 and g4 connection Y yes,
+N (or blanc) no.
+
+
+\subsection{Other basic circuit symbols}
+
+This circuit symbols are contained in macro \verb?\eltex5? \\
+
+\noindent
+\verb?\hfuse?
+Fuse horizontally.
+
+\noindent
+\verb?\vfuse?
+Fuse vertically.
+
+
+\noindent
+\verb?\hrelay?
+Relay horizontally.
+
+
+\noindent
+\verb?\vrelay?
+Relay vertically.
+
+\noindent
+\verb?\hlight?
+Light source general (bulb) horizontally.
+
+\noindent
+\verb?\vlight?
+Light source general (bulb) vertically.
+
+
+\noindent
+\verb?\bell?
+Bell horizontally.
+
+\noindent
+\verb?\buzzer?
+Buzzer horizontally.
+
+
+\noindent
+\verb?\siren?
+Siren horizontally.
+
+
+\noindent
+\verb?\microphone{x}?
+Microphone, x - letter - R right oriented,
+L left.
+
+
+\noindent
+\verb?\earphone{x}?
+Eatrphone, x - letter - R right oriented,
+L left.
+
+\noindent
+\verb?\loudspeaker{x}?
+Loudspeaker, x - letter - R right oriented,
+L left.
+
+\noindent
+\verb?\hcrystal?
+Quartz crystall horizontally.
+
+\noindent
+\verb?\vcrystal?
+Crystall vertically.
+
+
+\noindent
+\verb?\hgap?
+Spark gap horizontally.
+
+\noindent
+\verb?\vgap?
+Spark gap vertically.
+
+
+\noindent
+\verb?\antenna{n}?
+Antenna, n - number - 0 transmitting, 1 receiving, 2 transmission
+and reception alternatively, 3 transmission and reception
+instantaneously.
+
+\noindent
+\verb?\dipole{n}?
+Dipole, n - number - 0 single dipole, 1 folded dipole.
+
+\noindent
+\verb?\loopant?
+Loop antenna.
+
+\noindent
+\verb?\cell{x}{y}?
+Galvanic cell horizontally or vertically,
+x - letter - plus pole R right, L left,
+U up, D down, y - letter - Y photocell, N (or blanc) galvanic cell.
+
+
+\noindent
+\verb?\hglow?
+Glow lamp horizontally.
+
+
+\noindent
+\verb?\vglow?
+Glow lamp vertically.
+
+\noindent
+\verb?\hdlamp?
+Discharge lamp horizontally.
+
+\noindent
+\verb?\vdlamp?
+Discharge lamp vertically.
+
+\noindent
+\verb?\hflamp?
+Fluorescent lamp horizontally.
+
+\noindent
+\verb?\vflamp?
+Fluorescent lamp vertically.
+
+
+\noindent
+\verb?\sensor{x}?
+Sensor of the quantity, output in the left. x - text - symbol of the
+quantity e. g. $\vartheta$ temperature.
+
+\noindent
+\verb?\head{n}?
+converter head, output on the left. n - number -1 mechanical stereo
+receiving,
+2 magnetic mono receiving, 3 magnetic mono recording,
+4 magnetic mono cleaning, 5 magnetic mono combined,
+6 optical receiving.
+
+
+\subsection{Block symbols}
+
+This circuit symbols are contained in macro \verb?\eltex6? \\
+
+\noindent
+\verb?\ptran?
+Transformer
+
+\noindent
+\verb?\fgen{n}?
+Wave generator, n - number - 1 sine-wave, 2 square-wave, 3 sine-wave
+with variable frequency.
+
+\noindent
+\verb?\delay?
+Delay line
+
+\noindent
+\verb?\amplifier{x}?
+Amplifier, x - letter - orientation R right, L left.
+
+\noindent
+\verb?\filter{n}?
+Frequency filter, n - number - 1 low pass, 2 high pass, 3
+band pass, 4 band stop.
+
+\noindent
+\verb?\compressor?
+Compressor.
+
+
+\noindent
+\verb?\expander?
+Expander.
+
+\noindent
+\verb?\deemphase?
+Filter deemphase.
+
+\noindent
+\verb?\preemphase?
+Filter preemphase.
+
+
+\noindent
+\verb?\artline?
+Artificial line.
+
+\noindent
+\verb?\converter?
+Converter.
+
+\noindent
+\verb?\corrector{n}?
+Corrector, n - number - 1 amplitude distortion corrector,
+2 phase corrector, 3 group delay corrector.
+
+\noindent
+\verb?\limiter?
+Limiter.
+
+\noindent
+\verb?\balance?
+Balance.
+
+\noindent
+\verb?\termin{n}?
+Termination set, n - number - 1 with balancing network,
+other number - without balancing network.
+
+\noindent
+\verb?\hybrid?
+Hybrid transformer.
+
+\noindent
+\verb?\modulator?
+Modulator.
+
+
+\noindent
+\verb?\atenuator?
+Attenuator.
+
+
+\noindent
+\verb?\carrier{n}?
+Carrier frequency, n - number - 1 carrier,
+2 partially supressed carrier, 3 supressed carrier.
+
+
+\noindent
+\verb?\freq{n}?
+Frequency, n - number - 1 pilot frequency,
+2 signalling frequency. 3 measuring frequency.
+
+\noindent
+\verb?\pilot{n}?
+Pilot frequency, n - 1 basic group, 2 super group,
+3 master group, 4 super master group.
+
+\noindent
+\verb?\band{n}?
+Frequency band, n - 1 frequency noninverted, 2 band ad 1
+phase inverted, 3 frequency inverted, 4 band ad 3 phase
+inverted.
+
+
+\noindent
+\verb?\ltran{x}{n}?
+Light transmitter, x - letter - light transmission
+R right, L left, n - number - light - 1 coherent,
+other number - uncoherent.
+
+
+\noindent
+\verb?\lrec{x}{n}?
+Light receiver, x - letter - light reception
+R right, L left, n - number - light 1 coherent,
+other number - uncoherent.
+
+
+\noindent
+\verb?\fibre{x}?
+Optical fibre, x - letter - S single mode step refraction index,
+M multi mode step refraction index, blank letter -
+general optical fibre.
+
+\noindent
+\verb?\threephase{x}?
+Three phase source, x - letter - D delta, S star.
+
+\noindent
+\verb?\rgraetz?
+Bridge rectifier.
+
+
+\noindent
+\verb?\trafo{x}?
+Single phase transformer, x - letter - position
+H horizontally, V vertically.
+
+
+\noindent
+\verb?\engine{n}?
+Engine, n - number - 0 direct current, 1 single phase,
+3 three phase ,
+4 linear, 5 stepping.
+
+\noindent
+\verb?\gener{n}?
+Generator, n - number - 0 direct current, 1 single phase,
+3 three phase.
+
+\subsection{Logical circuit}
+
+This circuit symbols are contained in macro \verb?\eltex7? \\
+
+\noindent
+\noindent
+\verb?\andnand{n}{m}{x}?
+Logical gate AND, n - number - number of inputs 2 two inputs, 3 three
+inputs,
+m - number - type of the gate 0 basic, 1 power, 2 basic with open
+collector, 3 power with open collector, x - letter - I
+inverted output, N noninverted output.
+
+
+\noindent
+\verb?\ornor{n}{m}{x}?
+Logical gate OR, n - number - number of inputs 2 two inputs, 3 three
+inputs,
+m - number - type of the gate 0 basic, 1 power, 2 basic with open
+collector, 3 power with open collector, x - letter - I
+inverted output, N noninverted output.
+
+\noindent
+\verb?\invert{m}{x}?
+Inverter,
+m - number - type of the gate 0 basic, 1 power, 2 basic with open
+collector, 3 power with open collector, x - letter - I
+inverted output, N noninverted output.
+
+
+
+\section{Using of the commands}
+It is necessary to select the
+macro \verb?eltex? a \verb?bezier? In the case of "old"
+\LaTeX 2.09 there are the commands:
+
+ \begin{verbatim}
+\documentstyle[a4,bezier]{article}
+\input{eltex1}
+% if you need also \input{eltex2} ..... \input{eltex7}
+\begin{document}
+
+\begin{figure}
+\begin{center}
+\begin{picture}(100,80)(0,0) % picture size 100 x 80 mm
+
+\grid{10}{8} % grid with the step 10 mm
+ % mesh is numbered in mm
+ % to make easy the orientation
+ % After finishing the picture
+ % you can cancel this command
+\put(30,30){\dind{U}{R}{1}}
+
+\end{picture}
+\end{center}
+\caption{\it Circuit diagram.}
+\label{fig:agic1}
+\end{figure}
+
+here is any text
+
+
+\end{document}
+
+\end{verbatim}
+
+In the case of \LaTeX 2e is used only different heading
+of the document.
+
+\section{Example}
+
+\begin{verbatim}
+\begin{figure}
+\begin{center}
+\begin{picture}(100,80)(0,0)
+\grid{10}{8}
+\put(40,40){\mos{N}{R}{D}{D}{2}{Y}}
+\put(10,40){\hcap{0}}
+\put(40,10){\vrez{0}}
+\put(40,40){\vrez{1}}
+\put(30,10){\vrez{0}}
+\put(30,40){\vrez{0}}
+\put(60,10){\vrez{0}}
+\put(70,10){\vcap{0}}
+\put(60,45){\vvind{R}{0}}
+\put(70,50){\vturn{L}{0}}
+\put(65,50){\vcore{3}{F}}
+\put(60,10){\chassis{D}}
+\put(60,65){\vwire{5}}
+\put(60,70){\hwire{30}}
+\put(60,40){\hwire{10}}
+\put(10,10){\hwire{80}}
+\put(70,50){\hwire{10}}
+\put(70,56){\hwire{10}}
+\put(10,70){\hwire{30}}
+\put(30,10){\node}
+\put(40,10){\node}
+\put(60,10){\node}
+\put(70,10){\node}
+\put(30,40){\node}
+\put(40,43.5){\node}
+\put(60,40){\node}
+\put(30,70){\node}
+\put(90.5,10){\pin}
+\put(80.5,50){\pin}
+\put(80.5,56){\pin}
+\put(90.5,70){\pin}
+\put(9,10){\pin}
+\put(9,70){\pin}
+\put(9,40){\pin}
+\put(20,45){$C_{1}$}
+\put(20,55){$R_{1}$}
+\put(20,25){$R_{2}$}
+\put(45,62){$R_{3}$}
+\put(45,25){$R_{4}$}
+\put(53,25){$R_{5}$}
+\put(75,25){$C_{2}$}
+\put(90,75){$+U_{CC}$}
+\put(9,75){$\pm U_{r}$}
+\end{picture}
+\end{center}
+\caption{\it Circuit diagram.}
+\label{fig:agic1}
+\end{figure}
+
+
+\end{verbatim}
+
+\begin{figure}
+\begin{center}
+\begin{picture}(100,80)(0,0)
+\grid{10}{8}
+\put(40,40){\mos{N}{R}{D}{D}{2}{Y}}
+\put(10,40){\hcap{0}}
+\put(40,10){\vrez{0}}
+\put(40,40){\vrez{1}}
+\put(30,10){\vrez{0}}
+\put(30,40){\vrez{0}}
+\put(60,10){\vrez{0}}
+\put(70,10){\vcap{0}}
+\put(60,45){\vvind{R}{0}}
+\put(70,50){\vturn{L}{0}}
+\put(65,50){\vcore{3}{F}}
+\put(60,10){\chassis{D}}
+\put(60,65){\vwire{5}}
+\put(60,70){\hwire{30}}
+\put(60,40){\hwire{10}}
+\put(10,10){\hwire{80}}
+\put(70,50){\hwire{10}}
+\put(70,56){\hwire{10}}
+\put(10,70){\hwire{30}}
+\put(30,10){\node}
+\put(40,10){\node}
+\put(60,10){\node}
+\put(70,10){\node}
+\put(30,40){\node}
+\put(40,43.5){\node}
+\put(60,40){\node}
+\put(30,70){\node}
+\put(90.5,10){\pin}
+\put(80.5,50){\pin}
+\put(80.5,56){\pin}
+\put(90.5,70){\pin}
+\put(9,10){\pin}
+\put(9,70){\pin}
+\put(9,40){\pin}
+\put(20,45){$C_{1}$}
+\put(20,55){$R_{1}$}
+\put(20,25){$R_{2}$}
+\put(45,62){$R_{3}$}
+\put(45,25){$R_{4}$}
+\put(53,25){$R_{5}$}
+\put(75,25){$C_{2}$}
+\put(90,75){$+U_{CC}$}
+\put(9,75){$\pm U_{r}$}
+\end{picture}
+\end{center}
+\caption{\it Circuit diagram.}
+\label{fig:agic1}
+\end{figure}
+
+
+
+
+
+
+\end{document}