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Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
Hi Sir,
That is my problem, I don't know how to know if the phasing is correct or wrong; and how to correct it if its wrong? Can you give me some tips how to do it right? The easiest way I hope... =( thank you very much.. I don't have any scope =(
Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
I measured the voltage from both output of 74hc00 using multi meter tester. It is around 4.3 volts dc. (of course it varies when I move the pots of interrupter
Also, the output of the driver is around 8 to 14 vdc.. Is this good output? Thank you.
Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
Dr. KV,
Yes, I think MMT is not sufficient, =l ,, but i don't have an oscilloscope either. My DR makes wimpy sparks when I am trying to input more voltage from VAriac, I can hear that the frequency (prF) IS increasing simultaneously. What phenomena is this? I think the feedback is working but with problems too =(,. tonight I will get video of my problem the upload, I hope you can help,. thank you very much..
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
I think the increasing frequency problem is because the interference is fed back into your interrupter. Try using another IC for the interrupter, or put it in a grounded metal enclosure.
Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
Dr. KV,
I will try your proposed solution and post the result later. Also, Is the circuit logic board requires to be shielded (means earth grounded metal case)?
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Hi, I always put signal-level circuits into a shielded enclosure when operated near a TC resonator. The reason for this is that the capacitive current from the secondary coil can mess up sensitive circuits.
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Discrete GDT Driver
