Tesoro Tejon

[Austin]

The diagram is wrong. The transistor Q2 should have a polarity PNP.

[ivconic]

The diagram is wrong. The transistor Q2 should have a polarity PNP.

Yes you are right.
My mistake!
I suppose there are also another mistakes.
That's why i gave .sch file here so others can participate too and make own corrections.
Cheers!

[Derx]

ORCAD is the best solution

[Derx]

This scheme is made unsuccessfully meals -5. If you disconnect the coil, it will be gone and the generation of 7660 will not be able to give food -5 volts. and the whole scheme fails. gently transform this part of the better and more reliably. for example, remove the wire from pin 7 of 7660 and even better to alter the transmitter of the Lobo

[Derx]

Where in this scheme to connect VDI?

[Skippy]

Transistors T1 to T4 don't match Q1 to Q4.

[kt315]

I transfered schematic into ExpressSCH.

please do in OrCAD16.2 or P-CAD 2006. OrCAD is BEST for a schematic drawing, simple, has LEARNING COURSE adapted inside of the soft, step-by-step instructions, very informative, very demonstrative, - sic!!!

[Jerry]

Something about the resistors associated with Disc 1 and Disc 2 does not seem right. I wonder if R79 should be in series between R80 and R81 and also R82 in series between R83 and R84. Otherwise I don't see the purpose of R80, 81, 83 & 4.

Very interested to see how this project develops.

Jerry

[N@SKO]

Some fixes

[Skippy]

The oscillator supply voltages definitely could do with checking, it could be like the attached jpg:

[N@SKO]

Schematics is correct . Generator starts first at 8 volts with D7.Then starts 7660 and generator run at 13 volts

[Derx]

N@SKO
7660 out current very lov to supply transmitter+sheet and lov stability all sheet

see this datasheet http://www.intersil.com/content/inte...s/ICL7660.html

[Skippy]

Although the circuit works as is, I think it would be a good idea to protect pin1 of the 4024 divider with a schottky diode to 0V. I too am also puzzled by the Disc1/disc2 pot circuit - it seems there would be some interaction between the two pots, changing one would affect the other. Anyone else think this is odd?

[Derx]

Make a transmitter power of +12 volts, and the solution to all problems, and -8 volts to put on the chip

Disc1/disc2 remove. One diskrim enough

[GSL]

Some fixes