Electronics > Beginners

Zener regulator circuit, and power ratings.

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sureshot:
Thank you for posting those pdf files, looks like a lot of interesting content in them. I will check them out. Although I didn't see anything over 1 Amp output current, although that was at a glance.

David Hess:
There is nothing wrong with the zener series regulator other than the lack of current limiting.  Add a couple of normal diodes in series with the zener diode to compensate for the Vbe voltage drops.  Slightly more advanced versions are shown here.

sureshot:
Thank you for the data, that also looks like some interesting circuits and info to go over. So are my 5 watt zener diodes up to the task of a 3 Amp zener regulator circuit ? Or do i need to source some higher wattage zener diodes ? Thanks again with the help.

Simon123:
Yes they are up to the task, if you will also use transistors.
By the way that PDF i inluded, which you say only has 1A maximum. You can use formulas provided for higher current (3Amps).

sureshot:
Thank you for the downloads again, yes I will try and work out the formula for higher current.

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