----- Original Message ----- From: "David VanHorn" To: "Microcontroller discussion list - Public." Sent: Friday, January 12, 2007 12:15 PM Subject: Re: [EE] Power Power everywhere but not a drop to drink > On 1/12/07, Martin Klingensmith wrote: >> >> If your solenoid is only activated for 0.2s at a time, then you don't >> need a power supply rated for 3 amps. >> Use a 24v unregulated wall-wart to power the solenoid with 1000uF >> capacitor filtering it. > > > In a similar vein, I used a boost regulator to provide 32V at 19A 300uS > pulses for a thermal printer, from an 18V 2A wall wart. It loaded the > wall > wart at max power, and signalled the CPU when the next burn could happen.. > Takes careful selection of the output capacitors. > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist