Hi All,
I have one of those cheap 7 day programmable on/off timers that turns on a relay during the ON period. What I want is to remove the relay circuit and convert the constant output voltage to a single pulse output to switch a solenoid one way. When the timer output goes to 0 during the OFF cycle, I need the single output pulse to have reverse polarity to switch the solenoid the other way. The reason for this is we are running on batteries and only want current draw during switching. The idea is the get a few months out of the batteries.
And yes, that is how this solenoid operates. One pulse will switch it on, and one pulse with reversed polarity will switch it off.
Any recommendations for a transistor or logic circuit that could achieve this?
Thanks
I have one of those cheap 7 day programmable on/off timers that turns on a relay during the ON period. What I want is to remove the relay circuit and convert the constant output voltage to a single pulse output to switch a solenoid one way. When the timer output goes to 0 during the OFF cycle, I need the single output pulse to have reverse polarity to switch the solenoid the other way. The reason for this is we are running on batteries and only want current draw during switching. The idea is the get a few months out of the batteries.
And yes, that is how this solenoid operates. One pulse will switch it on, and one pulse with reversed polarity will switch it off.
Any recommendations for a transistor or logic circuit that could achieve this?
Thanks