One-shot circuit is programmable

Posted on Nov 26, 2012

Figure 1 shows how to digitally program the on-time of a one-shot multivibrator circuit. More and more, the Internet is playing a role in control operations in industrial and R&D endeavors and in household appliances. One-shot circuits are popular choices for the on/off control circuitry.

You can interface the programmable one-shot design in Figure 1 with any intelligent system, such as a PC, a µP, or a µC. The design uses a low-cost NE555 timer and an 8-bit AD7524 D/A converter. The timer IC is connected in a one-shot configuration

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