Certainly not wirewound. A film type, metal or metal oxide.
To my knowledge, Sfernice and Allen-Bradley manufactured this type of resistor, but there must be many others.
The holes are a common feature, probably a manufacturing necessity or help, to handle the end-cups before crimping them to the body, or a gas release to avoid pressure-building during the manufacture.
To my knowledge, Sfernice and Allen-Bradley manufactured this type of resistor, but there must be many others.
The holes are a common feature, probably a manufacturing necessity or help, to handle the end-cups before crimping them to the body, or a gas release to avoid pressure-building during the manufacture.
Interesting. They don't look like any other metal oxide resistors I've ever seen.
I suspected the holes were to release pressure from heat buildup during operation.
Thank you.
I suspected the holes were to release pressure from heat buildup during operation.
Thank you.
They look like Corning brand metal film resistors. Not a bad score for $10. They are good for rough environments.
Corning would be my guess as well. They also made them with light-blue bodies, numeric markings, and "CGW" brand ID.
Yes, mine look exactly like photos of Corning C-4 resistors I found online. Nice to have definitive information, and turns out these are quite useful to me in the values I bought. I estimate about 1,000 resistors, possibly more, and they are in values that I can use for my tube gear (audio and guitar).
Cheers,
Greg
Cheers,
Greg