johnsmith123
Member
Hello guys, I found this simple circuit to build with simple parts that I have here.
Led is supposed to turn on when the phone is off hook.
I have a problem in that the LED is always ON, no matter if the phone is off hook or not.
I checked the voltage at the 680K resistor, and the polarity of the Tip and Ring, ALL is good.
I found other circuits but I have all the parts for this one.
Can someone help?
Thanks
Led is supposed to turn on when the phone is off hook.
I have a problem in that the LED is always ON, no matter if the phone is off hook or not.
I checked the voltage at the 680K resistor, and the polarity of the Tip and Ring, ALL is good.
I found other circuits but I have all the parts for this one.
Can someone help?
Thanks
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