"Ian Jackson" wrote in message
...
In message , Any one
writes
Ian Jackson wrote on 29-Jul-09 14:40 :
In message , rf
writes
Roger Dewhurst wrote:
You can get simple to use regulator chips that drop the voltage
down, you only need a couple of components to make a working voltage
regulator. Ask on News:sci.electronics.basic - the folk on there are
usually very helpful and should explain all you need.


Why not just drop the voltage through a few diodes? Very simple. Very
cheap.

A *few* diodes at a couple of ten cents per each. A single 7809 for
less
that a $.

More like "a *few* diodes at a couple of cents per each".
3V to drop = 5 diodes @ 0.6V per diode. No other circuitry required.

BWHAHAHAHAHAHAHAHA!!!! *cough* *wheeze* *wheeze*

-if- junction temperature remains constant.
-if- load current remains constant.
-if- each selected diode returns precisely 0.6v @ 'load current'.

More than good enough for the job.

AHAHAHAHAHAHAHA!!!

-if- source voltage remains constant
-if- there aren't any ICs that could suffer over-voltage damage
-if- you're as cheap and gullible as a Republi****

lemme guess -- you're a close relative of teh chucktard?

Lemme guess....
You have a degree in Electrical Over-Engineering?
--
Ian

The Nazi's invaded Russia with everything over engineered and nothing
winterised.