[volt-nuts] DAS-46

[Jerry Hancock]

One of the items I am having trouble modeling is a CLD, current limiting diode, MCL1302.  The CLDs are used between he base and collectors on the output stage 2n2219 / 2n2905.  I swapped them on the board with no impact on the problem.  I can’t find CLDs in LTSPICE.

The other diode I can’t read and it is used cathode to cathode in a weird arrangement.  The diode is roughly 1/2 the length (in this case height) of a 1n4148.   It measures as a diode with .51V forward.   I have a hard time telling if it actually has a cathode band.  I haven’t pulled it out but I guess I’ll have to and put it under the microscope to see if there is a number on it.  I have a lot of very low forward voltage switching diodes and Schottky type so I probably have it on-hand if I can get a number off of it.

I spent some more time on the circuit today.

By the way, even though the Parent company, was General Resistance, now Prime Technology, said they would sell me a CSA, they said they won’t share the schematic.

Thanks again.