can somebody help for this schematic

[analyndalin]

what is the value of the 2 diode in this schematic of 500w 12 to 220 volts inverter?

 

[cakud]

what is the value of the 2 diode in this schematic of 500w 12 to 220 volts inverter?

2 diode are 1N5407. i tried and work well

 

[keith1200rs]

To prevent excessive reverse voltage on the base-emitter of the transistors maybe?

Keith.

 

[analyndalin]

thank you very much...
do you think this diagram is working properly?

analyndalin.

 

[analyndalin]

what is the voltage value of capacitor used in this schematic?

 

[keith1200rs]

C1 will never see more than 12V. As it is only 100nF it doesn't need to be polarised.

Keith.

 

[analyndalin]

it is ok to use mylar for c1?

thanks....

 

[keith1200rs]

Yes it would work fine.

Keith.

 

[analyndalin]

thank you very much keith...
can i ask another question?
I would like to attach this lead acid battery charger to an inverter ive shown before to ensure that anytime there is a drop in the battery voltage, it will automatically recharged. Do think it is possible?

Lead acid circuit diagram

 

[analyndalin]

i build this inverter i used 10A step up transformer but the output is only mV i also checked my connection. can somebody help me to trouble shoot this circuit? these is very important for me to finish this project...

inverter circuit diagram


thank very much...