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4hv.org :: Forums :: Tesla Coils
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TL494 with Antenna Feedbacking

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zzz_julian_zzz
Fri Jul 15 2011, 08:37AM Print
zzz_julian_zzz Registered Member #3964 Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
I am currently running my SSTC using a TL494 pwm oscillator just like ritchie burnett did.

Link2

I just want to know how to use antenna feedbacking and how to implement it on my current circuit.
Please help me frown I'm just a newbie..
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Dr. Dark Current
Fri Jul 15 2011, 09:51AM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Hello,
the antenna feedback is not possible on the TL494, it's a self-oscillating PWM SMPS chip.
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zzz_julian_zzz
Tue Jul 19 2011, 07:32AM
zzz_julian_zzz Registered Member #3964 Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
My oscillator setup is based on a tl494 pwm IC. and my gate driver IC's are TC4422/1 which both don't have an "Enable" function unlike UCC's. I would like to integrate a Feedbacking system and also an Interrupter to set the on and off duty ratio. Can anyone give me an Idea on how to do it both? I saw Steve Ward utilizes a feedbacking circuit with a TL494 ic with it, but still, don't have an Interrupter. frown Please help me.
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Dr. ISOTOP
Tue Jul 19 2011, 08:29AM
Dr. ISOTOP Registered Member #2919 Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
Steve's SSTC2 has a TL494 in it, but doesn't actually use it.
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zzz_julian_zzz
Wed Jul 20 2011, 05:45AM
zzz_julian_zzz Registered Member #3964 Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
Yes, I can see that also, but what I am asking is, how to integrate interrupter with a circuit like this? confused
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zzz_julian_zzz
Wed Jul 20 2011, 05:47AM
zzz_julian_zzz Registered Member #3964 Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
Is there actually a way on how to do it?
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Dr. ISOTOP
Wed Jul 20 2011, 06:16AM
Dr. ISOTOP Registered Member #2919 Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
Shhhh don't double-post! Use the edit button!
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zzz_julian_zzz
Thu Jul 21 2011, 04:37PM
zzz_julian_zzz Registered Member #3964 Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
sorry bout that smile I didn't notice,


uhm, another Just a newbie question about drsstc interrupter, can someone explain what is BPS, PRF, PW, and Pulse rate? all of these terms are very confusing for me. dead

If possible also distinguish these terms to oscillating feedback freq and the interrupter pulses,. I mean what terms are for f.b. freq and int.?

is PRF is same as BPS? cause in frequency, seconds(time) are concerned, and this seconds are in the B.P.S as in second isn't?!grr please, help answer these,. it so confusing they all circling in my head..
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