How can the power consumption for computing be reduced for energy harvesting? Yes, my password is: Eagle PCB clearance error 2. Sep 12, 4. Nov 3, 1, Originally Posted by kam There is some problem in my timer circuit.

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Drive MOSFET with 555

NPN transistors work just fine for this purpose. Originally Posted by barry. They are quite capable of oscillation if they are not wired or bypassed carefully, and when they do, they can cause chaos with volts of square wave being injected into a power line.

They can also be enhancement mode or depletion mode. Use a lower rated part to get better Rdson, like for example ipbn20n3g. Is there a way to measure current that the timer take while waiting for trigger?

You mentioned earlier that you didn’t have moafet bypass capacitor across the 12 volt input. Also, 5 volt regulators are not as simple or innocent as they may appear.


You would be using something like this: Power ON motor circuit with Mosfet not relay Could you restate your question, I can’t follow it at all. Since the motor, Mosfet, R5 and the buzzer are all in series then when the Mosfet turns on the buzzer with R5 will get most of the 12V and the motor will get almost nothing. KavikMar 7, Jun 4, 6, 1, Discussion in ‘ General Electronics Chat ‘ started by priyaloganathanSep 12, How do you get an MCU design to market quickly?

Drive MOSFET with | Physics Forums

ln555 And, apparently, 54 other viewers can’t, either. If you haven’t fixed this, you need to. There is usually a diode across C3, cathode pointing upwards, but otherwise yours would probably look like that.

Can we discuss about design 2, using astable mode of timer? It may not be fully discharging thus always on.

Jun 5, 24 0. How can I integrate both the supplies such that there should be switching between them which should not affect the pulsating supply? Sep 14, And you don’t want that microphone in line with the source. What might be the possible reasons? Sep 16, Nov 3, 1, I connected a diode MURG across electromagnet to catch the back emf pulse. Your question boils down to basically, “can I use transistors to drive things?

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I’ve measured the period and it appears to be correct. Home Questions Tags Users Unanswered. You might try a reverse-biased diode across the inductive load pointing up in the schematic shown to clamp back-EMF kick when the FET shuts off.

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Jun 6, If I place 10uF capacitor between 2 and 6, waveform seems to be distorted. Jun 5, 9. How fast do you need to drive it?