Gday all,
I would like some assistance with a circuit that is giving me some trouble. The circuit in question is a Remote 240V Controller that I use to operate a winch to pull a caravan up a narrow driveway. I got the remote transmitter and receiver units (wireless) from a neighbour, and he helped with the design of the circuits to operate the relay for the 240V GPO, but he has moved away. Also, I have heard he recently had a heart scare, and I would rather not trouble him at the moment. I have a basic understanding of electronics, and can solder/build circuits from circuit diagrams, but I do not understand enough about the design of circuits to be able to fix the following problem.
The receiver emits a series of beeps when the transmitter sends a signal, and I can hear the beeps from 35 to 40 metres away, but the rest of the circuit is not reliable enough as the relay does not always operate. If I am starting the winch, it is not a big deal as I keep pressing the transmit / operate button until the relay kicks in. But occasionally the relay does not disengage when I want to stop the winch, and that can be a disaster. As the driveway is so narrow, I cannot get to the winch in a hurry if things go wrong, and I have already pulled the caravan into a fence once when the winch would not turn off. Note that the circuit is set up for latching the relay the same transmitter button should start and stop the winch.
One confusing aspect of this problem is that it appears to depend on distance. The relay operates fairly reliably when the transmitter is close (say within 10 to 15 metres) but is not so reliable at full range - BUT the beep can be heard at most ranges. Why would the beeper work at all ranges, but not the relay? - I assume if the beep sounds it means the receiver has fully triggered, but I have not been able to confirm this.
The attached diagrams show two circuits. I cannot remember why we changed from the ORIGINAL to the REVISED circuit. The circuits do not show any details of the transmitter or receiver as these are proprietry devices. We have only tapped into the receiver's output to trigger the rest of the circuit. I am happy to purchase new components and revise the circuit board as I need to cure this problem. I have a number of BTA41-600B and BTA25-600B Triacs if they would prove useful.
Any suggestions or circuit improvements would be most appreciated.
Cheers,
Ian
I would like some assistance with a circuit that is giving me some trouble. The circuit in question is a Remote 240V Controller that I use to operate a winch to pull a caravan up a narrow driveway. I got the remote transmitter and receiver units (wireless) from a neighbour, and he helped with the design of the circuits to operate the relay for the 240V GPO, but he has moved away. Also, I have heard he recently had a heart scare, and I would rather not trouble him at the moment. I have a basic understanding of electronics, and can solder/build circuits from circuit diagrams, but I do not understand enough about the design of circuits to be able to fix the following problem.
The receiver emits a series of beeps when the transmitter sends a signal, and I can hear the beeps from 35 to 40 metres away, but the rest of the circuit is not reliable enough as the relay does not always operate. If I am starting the winch, it is not a big deal as I keep pressing the transmit / operate button until the relay kicks in. But occasionally the relay does not disengage when I want to stop the winch, and that can be a disaster. As the driveway is so narrow, I cannot get to the winch in a hurry if things go wrong, and I have already pulled the caravan into a fence once when the winch would not turn off. Note that the circuit is set up for latching the relay the same transmitter button should start and stop the winch.
One confusing aspect of this problem is that it appears to depend on distance. The relay operates fairly reliably when the transmitter is close (say within 10 to 15 metres) but is not so reliable at full range - BUT the beep can be heard at most ranges. Why would the beeper work at all ranges, but not the relay? - I assume if the beep sounds it means the receiver has fully triggered, but I have not been able to confirm this.
The attached diagrams show two circuits. I cannot remember why we changed from the ORIGINAL to the REVISED circuit. The circuits do not show any details of the transmitter or receiver as these are proprietry devices. We have only tapped into the receiver's output to trigger the rest of the circuit. I am happy to purchase new components and revise the circuit board as I need to cure this problem. I have a number of BTA41-600B and BTA25-600B Triacs if they would prove useful.
Any suggestions or circuit improvements would be most appreciated.
Cheers,
Ian
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