Some time back I brought up a question regarding a later Barr Electric that operates on 120 volt line current. I was surprised that the magnetic circuit was not laminated.
This clock has run for some months, but suddenly stopped. It appears that the magnet was no longer being supplied with enough current. After doing a number of tests, nothing seemed to be at fault except the electro-magnet not being strong enough.
Removing the dial, I found that a small resistor was mounted behind the dial, to the contact connection. This had deteriorated and cracked. Unfortunately the resistor was of the very inexpensive carbon molded type used long ago in vacuum tube radios.
I will have to replace this with a new resistor, but here is my problem. The colors of the rings on the body are no longer vivid enough for identification. And to be honest, I am partly color blind which makes this all the more difficult. My plan is, when I know the correct resistance originally used, to parallel two resistors of double the value of the original, thus retaining the same resistance, but doubling the wattage for a longer life.
Does anyone know what the value in Ohms these resistors were? Presently it measures 385 ohms in it's damaged condition, but this seems too high. if I am correct.
Thanks for any suggestions.
Henry Weiland
This clock has run for some months, but suddenly stopped. It appears that the magnet was no longer being supplied with enough current. After doing a number of tests, nothing seemed to be at fault except the electro-magnet not being strong enough.
Removing the dial, I found that a small resistor was mounted behind the dial, to the contact connection. This had deteriorated and cracked. Unfortunately the resistor was of the very inexpensive carbon molded type used long ago in vacuum tube radios.
I will have to replace this with a new resistor, but here is my problem. The colors of the rings on the body are no longer vivid enough for identification. And to be honest, I am partly color blind which makes this all the more difficult. My plan is, when I know the correct resistance originally used, to parallel two resistors of double the value of the original, thus retaining the same resistance, but doubling the wattage for a longer life.
Does anyone know what the value in Ohms these resistors were? Presently it measures 385 ohms in it's damaged condition, but this seems too high. if I am correct.
Thanks for any suggestions.
Henry Weiland