Can I replace a 2 inch cloth covered 750 ohm wirewound resistor with a conventional resistor? It has
solid wire-wound ends with cloth in between. I accidentally broke it as it was very brittle. What wattage would be needed in the replacement also. This is in a Crosley 148.
Thanks, Bob

:Can I replace a 2 inch cloth covered 750 ohm wirewound resistor with a conventional resistor? It has
:solid wire-wound ends with cloth in between. I accidentally broke it as it was very brittle. What wattage would be needed in the replacement also. This is in a Crosley 148.
:Thanks, Bob

Yes, you can. A #42 tube has a max plate current of about 35mA. Using the formula P=I squared x R :
(.035x.035)x 750 = .91875 Watts. Therefore, a 1 watt resistor should suffice. Nothing wrong with a 2 or 3 watt if you have one. Watch out that the tube is not shorted or the new reistor could smoke!

This set has a 2A5 in place of a #42 in contrast to what the schematic says. I cannot find the correct schematic. So I guess the 2A5 would be about the same?
Bob
::Can I replace a 2 inch cloth covered 750 ohm wirewound resistor with a conventional resistor? It has
::solid wire-wound ends with cloth in between. I accidentally broke it as it was very brittle. What wattage would be needed in the replacement also. This is in a Crosley 148.
::Thanks, Bob
:
:Yes, you can. A #42 tube has a max plate current of about 35mA. Using the formula P=I squared x R :
:(.035x.035)x 750 = .91875 Watts. Therefore, a 1 watt resistor should suffice. Nothing wrong with a 2 or 3 watt if you have one. Watch out that the tube is not shorted or the new reistor could smoke!

This set has a 2A5 in place of a #42 in contrast to what the schematic says. I cannot find the correct schematic. So I guess the 2A5 would be about the same?
Bob
::Can I replace a 2 inch cloth covered 750 ohm wirewound resistor with a conventional resistor? It has
::solid wire-wound ends with cloth in between. I accidentally broke it as it was very brittle. What wattage would be needed in the replacement also. This is in a Crosley 148.
::Thanks, Bob
:
:Yes, you can. A #42 tube has a max plate current of about 35mA. Using the formula P=I squared x R :
:(.035x.035)x 750 = .91875 Watts. Therefore, a 1 watt resistor should suffice. Nothing wrong with a 2 or 3 watt if you have one. Watch out that the tube is not shorted or the new reistor could smoke!

:This set has a 2A5 in place of a #42 in contrast to what the schematic says. I cannot find the correct schematic. So I guess the 2A5 would be about the same?
:Bob
:::Can I replace a 2 inch cloth covered 750 ohm wirewound resistor with a conventional resistor? It has
:::solid wire-wound ends with cloth in between. I accidentally broke it as it was very brittle. What wattage would be needed in the replacement also. This is in a Crosley 148.
:::Thanks, Bob
::
::Yes, you can. A #42 tube has a max plate current of about 35mA. Using the formula P=I squared x R :
::(.035x.035)x 750 = .91875 Watts. Therefore, a 1 watt resistor should suffice. Nothing wrong with a 2 or 3 watt if you have one. Watch out that the tube is not shorted or the new reistor could smoke!

Plate current for 2A5 is the same.

::This set has a 2A5 in place of a #42 in contrast to what the schematic says. I cannot find the correct schematic. So I guess the 2A5 would be about the same?
Robert,
What reference do you use to find the plate current for tubes? And thanks for responding to my question. I appreciate it very much.
Bob E

::Bob
::::Can I replace a 2 inch cloth covered 750 ohm wirewound resistor with a conventional resistor? It has
::::solid wire-wound ends with cloth in between. I accidentally broke it as it was very brittle. What wattage would be needed in the replacement also. This is in a Crosley 148.
::::Thanks, Bob
:::
:::Yes, you can. A #42 tube has a max plate current of about 35mA. Using the formula P=I squared x R :
:::(.035x.035)x 750 = .91875 Watts. Therefore, a 1 watt resistor should suffice. Nothing wrong with a 2 or 3 watt if you have one. Watch out that the tube is not shorted or the new reistor could smoke!
:
:Plate current for 2A5 is the same.

You use a tube data book. Many can be found on the internet.(search google for vacuum tube data) If you do much repair work at all you might consider buying one from the antique electronic supply houses. My favorite is the 1973 reprint of GE The Essential Characteristics. In it you will find pin outs, data on tubes, dial lamps, etc. It can be very helpful if no schematic is available, allowing you to troubleshoot by locating the proper pin numbers of tube elements.

:::This set has a 2A5 in place of a #42 in contrast to what the schematic says. I cannot find the correct schematic. So I guess the 2A5 would be about the same?
:Robert,
:What reference do you use to find the plate current for tubes? And thanks for responding to my question. I appreciate it very much.
:Bob E
:
:::Bob
:::::Can I replace a 2 inch cloth covered 750 ohm wirewound resistor with a conventional resistor? It has
:::::solid wire-wound ends with cloth in between. I accidentally broke it as it was very brittle. What wattage would be needed in the replacement also. This is in a Crosley 148.
:::::Thanks, Bob
::::
::::Yes, you can. A #42 tube has a max plate current of about 35mA. Using the formula P=I squared x R :
::::(.035x.035)x 750 = .91875 Watts. Therefore, a 1 watt resistor should suffice. Nothing wrong with a 2 or 3 watt if you have one. Watch out that the tube is not shorted or the new reistor could smoke!
::
::Plate current for 2A5 is the same.