I am trying to build circuit for plug tester. I have plug counter tester which only count no of cycles . The cycle represent to and fro motion of plug. I have set no of cycle as 40000. currently i am ruuning test for every 1000 cycle and stop to check continuity w.r.t phase , neutral & ground end cable point . At 36000 cycle i found the cable wont shoe continuity. With the current setup i could not able to know during which count my wire get worn out.
In order to recognize . i connected the output of the phase in series with bulb and neutral . with this setup pesron has to keep monitoring bulb when to get turn of.
My plan is to if bulb get off the main supply to plug testing machine should turn off. Plug testing machine can retrieve the count value @ which bulb get shut down. can some one suggest me how can build using ardunino uno
Is below circuit will work. currently made i have no connection with main testing board.
If you replace the switch with a direct connection through the plug, a normal working plug will read high like a closed/on switch and a broken/open connection will read low like an open/off switch.
By using 3 inputs you can check all 3 wires.
The example uses an external pull-down resistor, but you don't need the resistor if you enable the Arduino's built-in pull-up resistors[/url] and "reverse the connections", (so the connection through the plug overrides the pull-up and pulls the input to ground (when the plug is good).
There is one difference compared to your "high power" test. As long as there is one strand connected, the high-resistance Arduino method will test good. With high current, one (or a few) strands will burn-up (and/or the lamp might dim slightly, etc.).
If you want to use high power and a relay, do it the other way around... Get a relay with a an AC coil (120VAC or 240 VAC for wherever you live) and monitor the relay contacts with the Arduino.
In your circuit, the bulb is far more likely to burn out than the plug.
With a filament bulb, the constant heating and cooling of the filament (switching it on and off) will severely shorten its life.
Henry_Best:
In your circuit, the bulb is far more likely to burn out than the plug.
With a filament bulb, the constant heating and cooling of the filament (switching it on and off) will severely shorten its life.
The OP could have a small amount of current flow through the bulb during the off time to keep the filament hot.
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