Electronics > Projects, Designs, and Technical Stuff
Nano current inrush switch/low voltage cutout
<< < (5/5)
Howardlong:
First thanks for the input on this thread.

Attached is my design which seems to tick the right boxes.

o Behaves throughout the input voltage range (0V - 3.3V), including output always off in low voltage and no negative resistance characteristic.

o Push-pull output

o Low current (80nA at 1V, 94nA at 3.3V)

o ~30mV hysteresis (D3 & D4)

o Switch voltage 1.92-1.95V

The 1N4148 diodes are used in reverse bias mode for their leakage as they're a lot cheaper than ~100Mohm resistors.

You need to be careful when measuring current because the LEDs also act as photodiodes, potentially giving inconsistent measurements.

Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod