[Amps] Inverter Microwave HV Supply

[Ian White GM3SEK]

Steve Thompson wrote:
>
>
>David Smith wrote:
>> Several people have reported problems accessing the file.  Try dropping
>> the www - i.e.
>>
>> users.bigpond.net.au/dwsmith/hv_inverter.pdf
>Odd - I tried that yesterday and it didn't work, now it does. Probably
>my typing.
>
>I'm confused with the circuit around Q702. As I see it, it can only work
>if there's enough leakage in Q702 to charge C703. Get a good one and
>lack of flywheel puts Q701 in danger.

It does look strange... looks like they're trying to avoid having to 
provide gate drive to the floating transistor Q702, and are making Q702 
trigger itself instead.




-- 
73 from Ian GM3SEK