Low-battery-protector-


Posted on Nov 15, 2012

To prevent battery damage due to over -disc barge, a low-voltage detector and switch should be included in the design of the battery backup circuit. The detector circuit should consume extremely low current. The switch should exlnbit a low-voltage drop and be easy to control. R1 and D2 provide a trickle charge for the battery. Chosen for its low forward voltage drop, Schottky diode D3 prevents forward polarization of the diode incorporated in Ql.


Low-battery-protector-
Click here to download the full size of the above Circuit.

When the battery voltage is above approximately 8 V, the output of U1 is low and Ql is turned on. If the battery voltage falls below 8 V, the output of U1 increases and turns off Ql.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Power down function
555 organ circuit
Acceleration Monitor using ADXL202 and AVR
I have a 1990 Toyota Camry LE station wagon & trying to install
Fiat Coupe Engine Management
Adding an Inrush Current Reducer to an Astron Linear Power Supply
SRS5250S Application circuit diagram
50 to 150MHz high frequency VCO circuit
555 jewelry small electronic circuit diagram



Top