[volt-nuts] DAS-46
Jerry Hancock
jerry at hanler.com
Sun Jan 29 20:04:34 EST 2017
Yes, and I assume you would need an FET that acted like the CLD. I believe the MCL1302 is a 2mA device. I doubt I’[ll get the model working, which would be ideal.
> On Jan 29, 2017, at 3:20 PM, Bruce Griffiths <bruce.griffiths at xtra.co.nz> wrote:
>
> A CLD is merely a JFET with the gate connected to the source.Sometimes a source resistor may be included with the gate connected to the opposite end of the resistor to the end connected to the source.
> Bruce
>
> On Monday, 30 January 2017 12:12 PM, Jerry Hancock <jerry at hanler.com> wrote:
>
>
> 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.
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