This traditional timer setting can provide time intervals up to a few tens of minutes. The unijunction can be the 2N2646 and the SCR the TIC106. The supply voltage depends on the relay used. The circuit is from a Radio Shack documentation.
This traditional timer setting can provide time intervals up to a few tens of minutes. The unijunction can be the 2N2646 and the SCR the TIC106. The supply voltage depends on the relay used. The circuit is from a Radio Shack documentation.