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Search: Posts Made By: redwire
Forum: General Electronics Technical Discussion 06-25-2018, 12:27 AM
Replies: 125
Views: 2,779
Posted By redwire
Re: Repair Fence Energizer SS-1000E Fi-Shock

The two series-rectifiers are good to 2kV PIV, so I think mains transients damaged that one. With +340V on the big cap, you have -1.6kV left

Lightning, or line switching transients, a...
Forum: General Electronics Technical Discussion 06-22-2018, 02:12 PM
Replies: 125
Views: 2,779
Posted By redwire
Re: Repair Fence Energizer SS-1000E Fi-Shock

Posting the updated schematic.

You could test this with a series light-bulb, to limit current and give some indication of current draw. With the transformer disconnected, the only load that could...
Forum: General Electronics Technical Discussion 06-15-2018, 01:31 PM
Replies: 125
Views: 2,779
Posted By redwire
Re: Repair Fence Energizer SS-1000E Fi-Shock

I don't think they kill, otherwise dead cows, horses... but it does have a 20 mile fence range and burns through weeds and grass. Hmm.
Forum: General Electronics Technical Discussion 05-31-2018, 11:12 AM
Replies: 125
Views: 2,779
Posted By redwire
Re: Repair Fence Energizer SS-1000E Fi-Shock

No, if there is a large voltage drop across the fuse, it has high resistance.

Sometimes corrosion or carbon-tracking can wrongly give low-ohms reading to a part (resistor, fuse etc.) and then the...
Forum: General Electronics Technical Discussion 05-30-2018, 10:01 PM
Replies: 125
Views: 2,779
Posted By redwire
Re: Repair Fence Energizer SS-1000E Fi-Shock

With the transformer disconnected at B1/B2, there is no load on the power supply so the main cap C1 should charge right up to 330VDC, fast in about 0.2 sec so OP needs to figure out why current is...
Forum: General Electronics Technical Discussion 05-30-2018, 12:23 AM
Replies: 125
Views: 2,779
Posted By redwire
Re: Repair Fence Energizer SS-1000E Fi-Shock

Oh it's a 220VAC powered European version :facepalm:
Here in North America, there is no hot+neutral at 220VAC, how is the fencer then grounded?

About 5 second pulses and 330VDC on the main cap....
Forum: General Electronics Technical Discussion 05-28-2018, 09:56 PM
Replies: 125
Views: 2,779
Posted By redwire
Re: Repair Fence Energizer SS-1000E Fi-Shock

It works out to 10 seconds between pulses.
22uF and 2MEG, with 165V DC bus and 32V diac trigger.
Forum: General Electronics Technical Discussion 05-28-2018, 09:46 PM
Replies: 125
Views: 2,779
Posted By redwire
Re: Repair Fence Energizer SS-1000E Fi-Shock

I drew a schematic, instead of cleaning my house. Not all part values known but this should help figuring out things.

It looks like a slow relaxation oscillator making pulsed DC.
The transformer...
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