Showing posts with label monitor. Show all posts
Showing posts with label monitor. Show all posts
Monday, September 8, 2014
Simple Voltage monitor Wiring diagram Schematic
This is the simple Voltage monitor Circuit Diagram. This schema gives an early warning of the discharge of batteries. Zener diode Dl is chosen for the voltage below which an indication is required (9 V). Should the supply drop to below 7 V, Dl will cease conducting causing Ql to shut off.
Voltage monitor Circuit Diagram
Its collector voltage will now increase causing Q2 to start conducting via LED1 and its limiting resistor R4.
Wednesday, August 13, 2014
Low Voltage monitor
This is a schema which can be used to monitor batteries or other electric equipments current problems.Here that current will be indicated through the sound and through the LED.So you all can check your low volt equipments easily.
Parts:
U1 LM339 Voltage comparator IC
D1 1N5233B Zener Diode
D2 LED
R1, R3 1K 1/4W Resistor
R2 5K Pot
BZ1 Piezo Buzzer
MISC Board, wire, socket for IC
Note
# This schema can be operated with 9v to 12v
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