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Old 10th June 2009, 11:27 PM   #411
Salas is offline Salas  Greece
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Did you try V1 in P2P? If yes, give us some more info about your findings.
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Old 10th June 2009, 11:52 PM   #412
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hi salas - if u mean me - then I build something similar to V1 but I had some oscillation - so it's work in progress
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Old 10th June 2009, 11:58 PM   #413
Salas is offline Salas  Greece
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Yes, I meant you. What did you make? Something with very fast Mosfets?
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Old 11th June 2009, 12:59 AM   #414
mikelm is online now mikelm  England
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I use irf9530 successfully for current source - so far so good

I used two matched zvp3310a's in parallel for shunt.

had some oscillation - ran out of time - needs more work

I'll report if I get it working
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Old 11th June 2009, 01:06 AM   #415
Salas is offline Salas  Greece
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Those are very fast. Use 470uF output capacitor or higher. Did you? Also stoppers on both gates of the duo.
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Old 11th June 2009, 01:21 AM   #416
Tham is offline Tham  Malaysia
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Hi Salas,

Newbie question here..

Tried V1 p2p using all component values in the schematic except a 24V zener (1N4749A). Power from a 24V trasformer with full bridge rectification, I measured 28V at the output when connected to a B1.

Is there any changes that I need to make (component, component values) to get 24V output?

Regards

Tham
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Old 11th June 2009, 01:59 AM   #417
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Quote:
Originally posted by Tham


Is there any changes that I need to make (component, component values) to get 24V output?

How about a 22v zener?


Click the image to open in full size.
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Old 11th June 2009, 02:00 AM   #418
Salas is offline Salas  Greece
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You need a 18-24V Zener of course. B1 will be happy in that range. Your DC input is high enough. Do you use some Zener right now?
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Old 11th June 2009, 03:00 AM   #419
Tham is offline Tham  Malaysia
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I am using a 24V zener now. Will a 22V zener get me 24V at the output?

Rgds

Tham
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Old 11th June 2009, 03:13 AM   #420
Tham is offline Tham  Malaysia
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BTW, I built according to the circuit on Post #255 but with a 24V zener.

Rgds
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