T
treez
Guest
Hello, i periodically need to switch a fet on which delivers 400mA current from the secondary of a current transformer.
The primary contains a 50KHz sinusoidal current (2A9 Average), which is produced by a highly resonant LC tank circuit.
Because of the resonant nature, i cannot simply and suddenly switch the switch from OFF to ON (because it would excite resonances in the resonant system)......but instead i must PWM the switch ON/OFF/ON...etc until its ON all the time....so i must gradually increase the dutcy cycle from 0 to 100%, until its ON all the time.
I need the gradual switching interval to be 5ms.
Do you know of a way of doing this?
The primary contains a 50KHz sinusoidal current (2A9 Average), which is produced by a highly resonant LC tank circuit.
Because of the resonant nature, i cannot simply and suddenly switch the switch from OFF to ON (because it would excite resonances in the resonant system)......but instead i must PWM the switch ON/OFF/ON...etc until its ON all the time....so i must gradually increase the dutcy cycle from 0 to 100%, until its ON all the time.
I need the gradual switching interval to be 5ms.
Do you know of a way of doing this?