harolto

that is sorta the circut, there is bits missing im sure, basicaly i need it to latch when 3v is applied, then unlatch by a button also i need it to stay latched if 12v is disconnected, or stay unlatched (memory sorta thing) any help is much appreciated -Jake

Hey, im having trouble with a circut im trying to build. basicaly i have an unstable voltage of 1.5v-3.1v that i need to switch a 12v relay and the relay needs to stay switched when the volts are removed, untill another switch is pressed (momentary switch). i built a circut using a transistor, a low current (3a 12v) relay, a higher current (40a 12v) relay, some resistors, and a diode, and i cant get it to work. i have a VERY basic knowledge of circuts, could some one help me out? a circut diagram would be great and parts that i need, thanks -Jake