I have two 1108 UA preamps using Raysistor by Raytheon CK 2037's for control of level. It says in Raytheon's old brochure to use not more than 4 volts and not more than 55 ma. of current to control these elements. So thats doable but these things use an incandescent bulb to change resistance of the sealed Cadmium cell. Seems like something ready to die at any moment.
What are other people doing to modify these things for service.
The TO 5 can is the Raysistor to control .
What are other people doing to modify these things for service.
The TO 5 can is the Raysistor to control .