You can use Pulse Width Modulation and suitable power FET devices and a single current sense resistor for each of the series strings, and then you are not going to need to design any analog control circuits. Just set the voltage for each string at a level that gives about 90% of max output at 100% on time. Then you can do it all in software.Just use a high enough PWM frequency to avoid visible flicker. AND heat-sink those series switch transistors. Probably the cheapest, easiest, most compact way of doing it.
|Thread starter||Similar threads||Forum||Replies||Date|
|S||Wireless Controllable Battery||Wireless & RF Design||5|
|Z||Using a Field Controlled DC Shunt Motor as a controllable brake||Homework Help||3|
|Q||Using a DC Motor as a Controllable Brake||Power Electronics||9|
|I||Linux controllable function generator||Software & IDEs||0|
|T||Controllable Precision Current driver +15v/ 2.0 Amp?||General Electronics Chat||4|
by Jake Hertz