pwm mosfet

  1. I

    Can I use BP2857 constant current LED driver IC with a PWM-controlled MOSFET for dimming and turning the lights on or off with an ESP8266/Arduino?

    I am trying to build a remotely controllable aquarium LED light. I live in a country where DigiKey and Mouser are not a thing. Electronic components are hard or impossible to find in this country. So I'm limited to the parts shown in the schematic. And my skills are not yet adequate for...
  2. T

    High Power Relay H Bridge

    Hello. I have created a schematic for a high power dual h bridge utilizing relays and IRF540 Mosfet but i cant seem to calculate the values for the gate resistor to the mosfet plus i would appreciate if anyone could point out any mistakes i made in the design. The schematic is attached below in...
  3. K

    5-200hz, 12-22VDC, 500ma max., Adjustable Solenoid Driver Circuit / PWM input

    Hi All, First time post here. Hope you're all having a good weekend. I'm doing a little project with a small clapper solenoid. It's one of the 5.5lb 12VDC, .25A 20mmDia. units sold on ebay. (ZYE1 P20/15). Though I don't have this one yet, so can give you the coil resistance, I'm working with one...
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