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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by JeffT

  1. J

    Newbie - Momentary make & break a circuit on relay activation

    Thanks Ken Time to study the parts catalogue. If it works which I'm sure it will, it'll be great, I knew there must be a simple solution. Jeff
  2. J

    Newbie - Momentary make & break a circuit on relay activation

    Hi Ken I'm not too good at this, but from the circuit it looks like when the light detector relay switches to NC the capacitor is charged and I presume this somehow mometarily activates the Reed relay. Does this circuit again activate the reed relay when the light sensor relay switches to NO...
  3. J

    Newbie - Momentary make & break a circuit on relay activation

    CF I'm not sure how the motor is controlled internally but just connecting the 2 wires together momentarily starts its operation. It stops when the motor won't move any more, it probably has a voltage or resistance sensor in it. Whatever controls it, reverses the operation for the next...
  4. J

    Newbie - Momentary make & break a circuit on relay activation

    Thanks for the reply CF I've sketched out what I need to do on the attached Light Dark relay.JPG attachment (2nd thumbnail). In principle it is very simple. If the relay on the light / dark switch just made and broke the circuit as the sky got lighter all would be well, but it would need to...
  5. J

    Newbie - Momentary make & break a circuit on relay activation

    Hi I'm completely new to this so sorry if I use the wrong terminology. I have made a light / dark switch from a kit which activates a relay, (just soldering the components in the correct location, I know, but it works which is a big step for me.) Now I want to control an existing motor...

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