Three single junction transistor time relay circuits


Posted on Mar 28, 2007

Three single-junction transistor time relay circuits It uses pulse charging circuit, and therefore can be done for a long time delay, maximum up to tens of minutes. FIG unijunctions VTi and other groups into the first stage delay circuit, charging the


Three single junction transistor time relay circuits
Click here to download the full size of the above Circuit.

capacitor Cl way exponential change; VTz other components of the second stage delay circuit capacitor Cz charging method for the pulse charging, the terminal voltage step change. The total time of the circuit, the equivalent of a two-stage relaxation oscillator delay time of the product.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Two-terminal-touch-switch
Audio Amplifiers 8
Digital Clock
instructions to assemble energy
Kawasaki KLR650 1995 Electrical
Lx1995 Led Driver: Camera Flash Application
Operational Amplifier Voltage Comparator Circuits
Electronic Schematic Diagram of Light Detector Robot using Light Dependent Resistor (LDR)
Contrast Control for LCDs
555 simple electronic circuit diagram massage



Top