Programmable Digital Timer Circuit Diagram. Program these switches to turn a device on and off at a set time and day. Programmable industrial timer circuit diagram circuit description.
Let us discuss in detail about this circuit. 24 hour switches repeat the same program daily. Circuit diagram of countdown timer.
The frequency of clock pulse is adjusted by preset vr 1 connected in series with resistor r 4.
Although the schematic looks correct this basic circuit may actually have a few negative aspects. Here in this circuit there are 5 push button. We have to configure 555 timer in mono stable mode to build a timer. Circuit diagram of a versatile programmable timer.
