Tag Archives: 4017

Pulse generator circuit

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This circuit is very useful while checking/operating counters, stepping relays, etc. It avoids the procedure of setting a switch for the required number of pulses. By pressing appropriate switches S1 to S9, one can get 1 to 9 negative-going clock pulses, respectively. Schmitt trigger NAND gate N1 of IC2, resistor… Read more »

Multi-Position Mains Switch

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The circuit shown here was born out of necessity after one of our colleagues had just renovated his kitchen and realized afterwards that there were not enough switches. Obviously he was not too keen to partially demolish the kitchen to install a few additional wires in the already tiled wall…. Read more »

DIY Linear Actuator Controller

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Linear actuator uses a lead screw driven by a permanent magnet dc motor to create linear motion from a dc voltage. When power is removed linear actuator will hold its position. However, if a force large enough to overcome the internal friction is applied, the actuator will back drive. Here… Read more »