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K2930 Opto-Isolated Mains Relay
  • $29.95
  • 4+ $27.00
  • Price per each

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Opto-Isolated Mains Relay

If you need to switch mains voltages, say from a micro’s out- put or any other low voltage source, you need to isolate them from each other. That’s what this project does – it’s easy to build and keeps mains voltages locked away from the controller and you! Virtually any low voltage source will do – from 2.7 to 10V.


K8131 DC Pulse Width Modulator Controller Kit
  • $29.95
  • Price per each

In Stock

DC Pulse Width Modulator Controller Kit

This control circuit is ideal for the accurate control of DC motors, lighting levels, small heaters as well as other applications. The circuit converts a DC voltage into a series of pulses, such that the pulse duration is directly proportional to the value of the DC voltage - with virtually no power loss! Protected against overload and short circui


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