On 7/13/14, 7:03 PM, Jim Larson wrote: > Got a schematic for us to look at, Dave?
Posted on Dorkbot. Right now I'm thinking of using an SMSC PAC1720 dual high-side current sensor -- it's pretty cheap, works to 40V, and has an SPI interface. Sounds easier than figuring out how to do accurate analog sensing (which is something else I'll have to learn one of these days...) The idea for Q2 (parallel w/ Q4) is to have a choice of small, fast FET or slower, higher-current FET to energize the test inductor/transformer. The relay is to short out a power-limiting resistor. You start out pulsing the test device with the resistor in place, and if everything looks good, you switch on the relay and you can really hammer the device with the big FETs. You can use the circuit to run motors too, and possibly to experiment with A/C line synchronization and feeding (small amounts of) power back to the grid. Regards, -- Mersenne Law LLP · www.mersenne.com · +1-503-679-1671 - Small Business, Startup and Intellectual Property Law - 9600 S.W. Oak Street · Suite 500 · Tigard, Oregon 97223
smime.p7s
Description: S/MIME Cryptographic Signature
_______________________________________________ dorkbotpdx-blabber mailing list [email protected] http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
