Long-Interval Programmable Timer

Posted on Dec 20, 2012

Using an RC oscillator, an up to 24-stage ripple counter O) 16777216 or 2U, and a 0.1-Hz count-rate with #

Long-Interval Programmable Timer
Click here to download the full size of the above Circuit.

2 = 39 KOhm, C2 = 0.001 ¥, and R4=220 KOhmhm for example, the count cycle would take about 654 s. This example shows the capabilities of this time circuit, using the Motorola MC14536 timer. A low-frequency oscillator can be used for longer time periods.

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