2019年12月16日 · I tried to build a buck converter without any ICs, just transistors, a diode and passive components. Its purpose is to convert 12V to 5V at 2 Amps. It works, but the switching MOSFET (IRF4905) heat...

2016年3月25日 · I'm using two 75HC595 shift registers to control these lights. In my car I also have 14 LEDs so I can see which lights are on. To switch the lights I wanted to use MOSFETs, but because all the lights have a common ground I must use them as a high side switch -> P-channel. I'm using the IRF4905. The lights I'm switching are 55W.

2010年9月11日 · The IRF4905 has a VERY LARGE gate charge requirement. If you would try it out with the circuit I posted ...

2018年9月8日 · I have designed and simulated an Arduino circuit to sequentially pulse six (6) glow plugs. I'm using two units to heat glow plugs on a V12 static engine. I need a Neg ground system and I have included flyback diodes to prevent issues with the 12V starter motor inductive load. The arduino is run...

2021年3月18日 · I'm trying to figure out what chips I need to run my irf4905. the mosfets will need to be running 5 amps at 24 volts using pwm to Varey the watts. if anyone has done anything with this mosfet an kn...

2013年1月4日 · Bit out dated theme but I was wondering same question, after some search, bellow you can see results They have some different Resistance values (IRFZ44 and IRF5305) but almost same input capacitances so they will turn ON and OFF almost in same time under same conditions

2021年12月5日 · Hi all, I'm testing a few P-Channel Mosfets (IRF4905) I bought. It's just the most basic setup - see sketch; battery is 15V, Incandescent light is pulling about 1.5A. When the gate is connected to (-), the light goes on and the Mosfet reaches +60deg C. in about a dozen or so second. Rated...

2008年2月10日 · IRF4905 P Mosfet Home. Forums. Hardware Design. Analog & Mixed-Signal Design . IRF4905 P Mosfet. Thread ...

2016年5月27日 · I have some spare IRF4905 P-MOSFET, some optocouplers, some TVS diodes 18V and various Zeners. My idea was this one (I found no optocoupler in Circuitlab, I made it myself more or less). I omit from the schematic the diode protecting from inverse voltage. simulate this circuit – Schematic created using CircuitLab. IRF4905 accepts at most Vgs=20V.

2020年11月21日 · I have a 100W D class amplifier that runs on 24V. It uses 2 x TPA3116D2 IC for amplification. I also have a 24V 16A power supply. I need to provide a soft start circuit for this, because the amplif...