I have a project about battery powered telemetry unit now. Battery is 3.6 voltage. I need to convert this voltage to Transducer excitation 21 volts (@ 200mA).Because It will be into ADC channel. the ripple voltage need be as little as possible.
any tip? thanks in advance! suncq@126.com
200ma at 21volts will require more than 1.4A from the 3.6V battery since any voltage multiplier will not be 100% efficient. Better have some pretty hefty batteries.