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I'm running a tube with specs similar to a 12ax at lower voltage (15-30v), and I want to build a tube square wave generator, hopefully with only one tube. Any thoughts?
Thanks, Leon
square wave generator
I'm trying to design a square wave generator with a tube. I tried transposing a solid state 741 design to the tube because the voltages are similar (plus or minus 15 volts for each amp).
It didn't work out and I got only clean output from the tube design. Any ideas...
I'm using a LM317 with 24vdc in and my desired vout is +/- 6v. My load is the filaments of 2 tubes at 300ma parallal or 150ma in series.
For the filaments in parallal, the LM resistor adjust is fixed at 300k., and the reference resistor is 10k. The filaments light up fine, but make a lot of...
Re: ground connection! should gnd connect to -battery termin
I didn't see a power supply in the schematic, but since I don't see anything that uses a negative voltage, I'd say the negative of the battery goes to ground along with everthing else.
I'm planning on using a fixed 2575 5v output IC with a unregulated 24vdc input. Is it ok to lift the ground pin of the 2575 with a couple IN4007 diodes to get 6.3v? I've done this successfully with linear 7805 ICs.
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