50Hz with N mosfet : ltSpice transformer problem

Thread Starter

j4e8a16n

Joined May 1, 2013
44
Hi everyone,

I made this LTSpice file for testing this 50Hz oscillator inverter

I found a transistor model but I dont see why it does not output a wave.

I used the following formula for the frequency = 1/( .7 * Rbase *C)
Regards,


JPD
 

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Alec_t

Joined Sep 17, 2013
10,470
...... also note that the 2N222s will fry because the negative-going voltage on their bases exceeds the base-emitter junction breakdown voltage.
 

ericgibbs

Joined Jan 29, 2010
8,886
hi j,
It is usual to fit clamp diodes from the Bases to 0v, so the Vbe reverse does not exceed -0.7v
But this may effect the osc frequency, it is a poor design.:(
E
 
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