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25th Oct 2020, 4:32 pm

The good old brain remembered the 4521 CMOS oscillator/divider, they can work at 12V and drive a pair of emitter followers to boost the output in push pull, no need for back EMF protection with a push pull drive. Or stack 20 together (20X10mA)!

25th Oct 2020, 4:32 pm	#14
Guest Guest Posts: n/a	Re: 12VDC power switching circuit The good old brain remembered the 4521 CMOS oscillator/divider, they can work at 12V and drive a pair of emitter followers to boost the output in push pull, no need for back EMF protection with a push pull drive. Or stack 20 together (20X10mA)! Attached Thumbnails