8 input Relays circuit


Posted on Feb 7, 2013

It is the essential continuity of circuits Sel 8 Sources and Up/Down Sel 8 Sources, but can work and autonomously, collaborating with any suitable circuit of control. The Relay 1-8 can be 6-24v DC. For current of collector of transistors Q1-8, bigger the 10 mA, it is better we use BD 139 or BD 679 with R 1-8 is 15K?.


8 input Relays circuit
Click here to download the full size of the above Circuit.

Part List R1-8=4.7 Kohms T1-8= BD139 (R1-8=15 Kohms if T1-8=BD679) RL1-8=6V-24V dc Relay D1-8=1N4148




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

LED Voltmeter for Cars
Popular Electronics Magazine April 1955
two transistor radio
What is analog to digital converter ADC using LM324 IC
A High Power Planar Triode Oscillator Designed by Using FEM Modeling
TDA2549 TDA2549 I.F. Amplifier And Demodulator For Multistandard TV Receivers
Car Headlights Timer Circuit Schematic



Top