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Battery-Low Indicator

Battery-Low Indicator

3

4

6

2

5

8

IC2

ME555

1

R

Vcc

Q

THR

TH

GND

GND

IC3

7805

1

3

OUT

2

IN

4

5

11

6

12

-

+

IC1

LM319

3

+

+

S1

ON/OFF

SWITCH

C3

0.1μ

R1

470K

R2

100K

12V

BATT.

*D1

LM385

VR1

10K

R3

10K

R4

1K

R5

100K

C2

0.1μ

R6

1K

R7

100K

R8

470Ω

LED1

C7

1μ (TANT)

10V

C6

0.01μ

C4

0.1μ

C5

10V

TESTED USING 2.2V ZENER DIODE

C1

0.01μ

Battery-Low Indicator

0
0
0
publish time: 2020-09-22
Kiraaaa

Rechargeable batteries should not be discharged below a certain voltage level. This lower voltage limit depends on the battery. This simple circuit can be used with a 12V battery and shows that the battery voltage is lower than a preset value.

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