dear all!thanks for helping.
i have not experience about this circuit. when i received this circuit it have error. i connect it to power supply, and then i touch on each component, when i touch on DIODE B80 3700 2200, suddently 2sd1293m burn. I replace 2sd1293m by MJE13005, i checked all of resistor, resistors are good! i checked irf631, it good too! then i connect the circuit to power supply and the circuit still not working, i checked voltage on each component and share with everybody. so that what i done before i come with you!
thanks!