>Gents
>
>re bias. I just put together a string of 49 x 6A diodes(each bypassed
>with a .01uf) on some perf board. Connected to a 12 pos rotary switch.
>
>On test jig, regulation between 200Ma - 2A is poor, 14%. V drop
>across each diode INCREASES from .7-.8 v From 50Ma - 2A, it's worse
>still.
For 3-500Zs, the total cathode - grid potential would vary not a lot.
The driving potential is close to 115v. What difference would it make
if the bias potential shifts from 4.2v at zero drive to 4.8v at full
drive? My guess is: not much.
>
>I get same results using 1N5408's. Also same results using paralled
>6A diodes for 'each diode'
>
>These are static tests, not dynamic. I would think the dynamic
>regulation would be 14% as well.
agreed, Jim.
- Rich..., 805.386.3734, www.vcnet.com/measures.
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