Hi,
I am looking for a recommendation regarding an IC(smd) that can turn on/off a circuit with the same tactile button, the simplest circuit that can be. One thing, it drives a dc motor so the battery is 18.5V and need to transfer about 3A(so preferably pass 5-6A continuous current).
In addition it would be helpful to know what are the key search words to look for such a thing.
Thanks,
Omri.
You could use an attiny45 or 85 and an n-channel logic level MOSFET. You would also need a few resistors and caps, and a voltage regulator.
It is not good enough to say “simplest circuit that can be”.
Show us a schematic for the circuit.
Show us a good schematic of your circuit.
Show us a good image of your wiring.
Give links to components.
Posting images:
https://forum.arduino.cc/index.php?topic=519037.0
No shortage of ways to go about it, discrete components like a SN7474N D Flip Flop, CD4013 CMOS version D Flip Flop plus a few others. Then any number of uC (micro-Controller) circuits will also be a good start. Use a logic level MOSFET for the switching as was already mentioned. There really is not much to it. You choose the method based on your specific application.
Ron
Don’t know of any IC’s that meet your specs as most are designed for logic level drive switching of usb power ports and other low voltage power rails.
There are board level products made that meets your specific needs here:
A MOSFET + latching button? Or only some button specified for 6A and inductive load? There must be something like that for example in vacuum cleaners.
This isn't an ic, but instead, some transistors, a few resistors, and in your case, also a mosfet, to allow you to use those power ratings. I have used this circuit before, and it works great. 4:10 talks about the mosfet: One button Push On Push Off ! The simplest circuit. - YouTube
Thanks everyone for the quick answers! The polulu circuit is great but I need to make something more custom.
I found this circuit that seem to fit my requierments:
I have 3 questions about it:
- What is the part of erz-cf2mk330 that is located near the power source.
- Just to make sure : my load should be connected before the voltage regulator and its GND is connected to all other GNDs?
- Does the voltage regulator has another job beside lowering the N-channel's gate voltage(because it can't get more than ~18V)?
Thanks
Added schematic and updated, any thoughts?
Thanks.
omri_saporta:
- What is the part of erz-cf2mk330 that is located near the power source.
Did you Google it?
It's a varistor and a varistor which has reached its end of life. Give this a read. As to why it's there and its function Google can be your best friend.
Ron