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Syd Rumpo[_2_]

On 09/11/2016 12:14, wrote:
On Wednesday, 9 November 2016 09:19:34 UTC, Syd Rumpo wrote:
On 09/11/2016 00:52, Dave Plowman (News) wrote:

snip

Assuming the 18v supply can provide enough current - which is likely since
an electronic device is replacing a mechanical one (I guess) a simple
voltage regulator should do the job.

Friedland make some doorbells which will *only* work on AC. They also
make doorbells which work on 8V AC or 6V DC. The implication there is
that the bisexual ones are solenoid operated and the higher AC is needed
to overcome the coil impedance at 50Hz.

You think it's needed. IRL solenoids are very tolerant. Try working with them some time.

NT

Friedland think it's needed, or at least desired. They have been making
doorbells for a very long time.

Now **** off and find something else you don't know about to pontificate
upon.

Cheers
--
Syd