K, I'll check out the data sheet.... If you have a link to the circuit tho that would be greatNordic said:Hold on, gotta find it again... I used a derivatie of this circuit for a low battery detector on model aircraft to sound a piezzo...
You should be able to knock one together from the LM311 datasheet..
A relay drawing 50mA to 100mA will drain the battery quickly. Not to mention that relais usually close at 75% rated voltage and open below 50%.
The "micropower" way with 5V reference, hysteresis comparator and power MOSFET can do accurate switching without draining the battery.
The "micropower" way with 5V reference, hysteresis comparator and power MOSFET can do accurate switching without draining the battery.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Power Supplies
- Low Voltage Cutoff circuit needed