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Registered Member #1412
Joined: Thu Mar 27 2008, 04:07PM
Location: Taipei Taiwan
Posts: 278
I almost finished my first DRSSTC.How can I test it safely without blowing up components?
I use this schematic
I planned to test if the driver (74HC109.74HC14....)is working properly before connect it to half bridge.But I'm not sure how to test it.
And What voltage to try before connect it to 110V mains?Can I test it with 12V then 48V then 110V(I don't have a variac)? Will it produce any spark at 12v input?(I didn't build the voltage doubler in the schematic,I use a bridge rectifier instead)
Registered Member #2922
Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226
Here, I test my circuits putting a 100khz aquare signal at the feedback input and scopping the gdt output.. this is the safest method to test your driver. When you know that it is working, put together with the half-bridge and test with 50v at the bridge
Registered Member #1403
Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
A good method to check your power circuits before powering it up, when you are worried about it exploding it can only mean that you have doubts about your own design / build.
Take a piece of paper and look at your power section on your tesla coil, draw the schematic of what you have built and compare it to what you built it after.
You will get scared from the switching noise the first time you power it up, it really is loud! To safely test a DRSSTC you really need a variac, but in order to avoid excessive over current tune the coil according to the javaTC calculator, worked very well for me.
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Safely testing my first DRSSTC?
