Hello I planned a light sensitive one pulse activated switch to know
when water tank is completely filled and to turn the water pump off
using a relay until I reset the circuit using its N/C Switch.
NOTE: There is an external circuit to detect if water starts to
overflow through overflow pipe and turns a Red LED(
http://www.kynix.com/Product/Cate/545.html) on to make this
light sensor circuit detect it.
Light sensitive part is working fine, but the problem is when I supply
power to the circuit, Relay 2(RL 2) I mentioned in this circuit diagram
keeps turning on and off continuously and I hear its extremely fast
continuous switching sound like a damaged speaker. Relay 2(RL 2) will
die if it turns on and off in such speed. (The purpose of RL 2 here is
giving continuous current to the RL 1 to act as a one pulse activated
switch.) I want to keep Relay 1(RL 1) turned on even light turns off and
only to be turned off when I reset the circuit.
Here is the circuit diagram:
What changes can I do for this circuit to keep the Relay 1 (which
activates by a light falling on LDR) on until I reset circuit using N/C
Push Switch?
Thanks in Advance.