Connect with us

Is there dpdt 1vots dc relay

Discussion in 'General Electronics Discussion' started by mrel, Dec 16, 2009.

Scroll to continue with content
  1. mrel


    Jul 2, 2008
    Is there a DPDT type relay that only use 1 volts dc to close the contact when power is supply and another contact close when there no power to the coil.
    So far came across relay use 3 volts dc that is the lowest dc volts found.
    Need a relay that use only 1 volts dc, is there such a DPDT relay that use only 1 volts dc ?
    If there is no such relay , is there a circuit that using a chip to draw 1 volts dc that can replace 3 volts dc relay.
  2. Resqueline


    Jul 31, 2009
    I don't think any such is available, you'd have to wind it yourself.
    But 1V is plenty to hold a 3V relay, and 2V is usually enough to draw it.
    You can make a circuit with one capacitor, diode, transistor, & resistor that will double the 1V for a moment so the relay will draw.
    Careful selection of the components will have to be made, it's not trivial to make circuits work on such low voltages.
    Alternatively you could make an 1V to 3V inverter.
  3. jamygdala


    Jul 13, 2009
    i've seen something akin to an isolated FET driver using a pulse transformer with appropriate turns ratio that may do this. Pulse on to draw it and 1V to keep it there. It might depend on how quickly the supply comes up to generate the 'ON' pulse. How long the pulse needs to be there and so on. Just some thoughts.
  4. neon


    Oct 21, 2006
    Never heard of reed relay need no power just magnetics to close?
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day