Dear naseerak sir
if it is possible, please post Proteus ISIS /.dsn file for your codes rk_sin_mod, sn73_lcd_b.rar
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Dear naseerak sir
my problem
"when the inverter SW pin 22 goes low the inverter turn on osculation PWM ok, but after few comes on BL (Battery Low pin 26) turn on then the inverter give 9 sound at 1 sec interval .then the inverter off(oscillation).Inv LED and BL LED on.
"
solved. Can you please locate the modified area of the code ...