T
Tim M
Guest
I'm designing a power supply that involves putting a bunch of zeners in
series, specifically 6 1N4742As (12V, 1W) and 12 1N4735As (6.2V, 1W).
Yes, I know that's a lot of zeners, but current drain of my circuit is
only 40-50 mA. However, I notice the zeners getting very hot, even
though I'm well below the max power dissipation per diode.
What sort of heat sinking considerations should I be taking. The
1N4742As are glass, the others metal. I have them laid out next to each
other lengthwise (see below), which probably wasn't the best choice for
heat dissipation.
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Thanks,
Tim
series, specifically 6 1N4742As (12V, 1W) and 12 1N4735As (6.2V, 1W).
Yes, I know that's a lot of zeners, but current drain of my circuit is
only 40-50 mA. However, I notice the zeners getting very hot, even
though I'm well below the max power dissipation per diode.
What sort of heat sinking considerations should I be taking. The
1N4742As are glass, the others metal. I have them laid out next to each
other lengthwise (see below), which probably wasn't the best choice for
heat dissipation.
| | |
--- --- ---
| | | | | |
--- --- ---
| | |
Thanks,
Tim