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Lrfz30 starter jacbk Start date Mar 6, Last edited by a moderator: With a 5V supply the datasheet of an ordinary shows that its output goes as high darasheet only 3. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at To participate you need to register. I had false triggering on my timer setup then I added a microF cap. On the LM you have a capacitor which is wrong in parallel with the ohm resistor from the output to the ADJ pin but the datasheet has only the resistor or the resistor with an added parallel diode when the ADJ pin has a capacitor to ground.
Your schematic does not show a part number for your Mosfet. By that I do not mean dataheet Jacbk will be one of them.
IRFZ30 MOSFET. Datasheet pdf. Equivalent
Perhaps a bipolar transistor would be better? Maybe the little 9V battery “falls on its face” when the high starting current of the motor causes its voltage datadheet drop which causes a false trigger of the ? I certainly will not, I appreciate all the help I can get. In fact, always check datasheets Your pump needs a much higher current. Media New media New comments Search media.
Nowhere says the size of the 9V battery. And yes, we need to know the spec of the pump motor Articles Top Articles Search resources. Way too low for most Mosfet gates. OP is commonly used around here rifz30 the forum.
IRFZ34 – (IRFZ30 / IRFZ34) N-Channel Power MOSFET
You must log daatasheet or register to reply here. Wooops, I think I need to move the manual switch diode out ahead of the pin 3 diode.
I will give this a shot. Consider some small 0.
It might be necessary to use two diodes to form a simple OR function, but you might get away with changing the gate resistor to say 1K and having another 1K via your now low-current switch.
The following posts were split off from the following old thread: I am using a ohm resistor ahead of the diodes because that is what I have. There are a few differences compared to the one I have tried and shown above. Is this what you mean? I think even 10K’s would work, someone out there would know. Boncuk shows a schematic that isolates the trigger pin 2 of the timer with a transistor. Adtasheet it says the motor is a 6V motor so maybe 9V is too much for it.
Jacques, Instead of datasneet relatively high current switch to operate the pump motor, why not just provide a low-current with series resistor input to the MOSFET? Now when I use the manual switch it sets off the timer.
To be honest, the LM isn’t really needed, it could be run directly off the battery.