AC Electric Fence HELP

134

01:21:57

Can anyone please help with this circuit? The goal is to make an electric fence with an AC 220 voltage input and with the least amount of components as possible to generate a pulse of 4KV to 10KV of about 10mA to 20mA every 1.3 seconds or so. Any ideas?

published 6 years ago

GLaDOS

6 years ago

Use a spark gap and a voltage multiplier. By the way, don't use those components, they can't resist so much voltage

rich11292000

6 years ago

The transformer for this situation has a high secondary coil resistance and can only produce so much magnetic flux. These characteristics limit the output amperage. Like a neon transformer. Consumer products can have addition protection on the secondary.

Twostein

6 years ago

Hi and thanks for the quick reply GLaDOS. What exactly does the spark gap do? Also, why would these components not be suitable for 220V since they are used in all AC circuits in general ?

Twostein

6 years ago

@rich11292000, as I understand the amperage on the secondary should be very low as not to kill an animal or human (20 mili Amp max). My question is however: How do I make the frequency less than 50Hz which is supplied by the source?

Twostein

6 years ago

@rich11292000, say for instance one pulse every 1 second? I know timer IC's can do that,..but I was wondering if I could add something simple to the circuit like a few capacitors or something?

ViolationMad

6 years ago

@Twostein Okay first 220VAC are like 325V peak. But anyway why do you want to use the outlet for this. Right now your peak power would be around 60W. Use a battery and a high frequency circuit for an ignition coil or a flyback trafo. This will at least make the primary side of the circuit safe. Also a pulse circuit for a low voltage is way easier to design.

PROIETTIMARCELLO

6 years ago

with a rotary spark gap you can adjust the time and voltage more easily and by making some changes you can also make sure that the decreasing impulses in a given period of time remain increasing in the field of electrical engineering then surely using more modern and managed systems from electronics you can still achieve but not my field 👍

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