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Thanks for the schematic. Way too low for most Mosfet gates. I’ve read so many threads where the original OP is OP right?

Media New media New comments Dataheet media. Nowhere says the size of the 9V battery. I certainly will not, I appreciate all the help I can get. Both the xatasheet in the 1st post of this thread show a 9v battery, but I will wait until jacbk replies – at least we are not wasting our irfzz30. Thread starter jacbk Start date Mar 6, Last edited by a moderator: The diagram was only to suggest a way to manually turn the pump on – yes a complete redesign is necessary.

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.

IRFZ30 NTE Equivalent NTE N channel MOSFET – Wholesale Electronics

And yes, we need to know the spec of the pump motor Welcome to our site! I think even 10K’s would work, someone out there would know. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.


Somewhere it says the motor is a 6V motor so maybe 9V is too much for it. I had false triggering on my timer setup then I added a microF cap. Just saying hello Started by MichaelaJoy Yesterday at 6: Forums New posts Search forums. The following posts were split off from the following old thread: Boncuk shows a schematic that isolates the trigger pin 2 of the timer with a transistor. There are a few differences compared to the one I have tried and shown above.

To participate you need to register. To be honest, the LM isn’t really needed, it could be run directly off the battery. At the time I didn’t have the manual switch installed.

OP is commonly used around here in the forum. I can tell by the sound of the pump, and allot less flow is being produced. I tried doing the same thing with mine to see if it was helpful in regards to the effect of the manual switch but it was not. Click here to register now. Consider some small 0. Is this what you mean?

Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. Wooops, I think I need to move the manual switch diode out ahead of the pin 3 diode. By continuing to use this site, you are consenting to our use of cookies. Potentiometer Questions Started by norbss Yesterday at Perhaps a bipolar transistor would be better? Now when I use the manual switch it sets off the timer. Is a little 9V battery able to produce enough power to drive the motor?


Articles Top Articles Search resources. For a better experience, please enable JavaScript in your browser before proceeding. In fact, always check datasheets I am using a ohm resistor ahead of the diodes because that is what I have.

By that I do not mean that Jacbk will be one of them.

You must log in or register to reply here. Thanks Aardy, I’m kind of a newbie at this.

With a 5V supply the datasheet of an ordinary datsaheet that its output goes as high as only 3. False triggering of a timer.

Maybe the little 9V battery “falls on its face” when the high starting current of the motor causes its voltage to drop which causes a false trigger krfz30 the ? Your pump needs a much higher current. Jacques, Instead of a relatively high current switch to operate the pump motor, why not just provide a low-current with series resistor input to the MOSFET? Started by datasheey Yesterday at 8: Your schematic does not show a part number for your Mosfet.