On Wednesday, 9 November 2016 13:50:18 UTC, Syd Rumpo wrote:
On 09/11/2016 13:24, tabbypurr wrote:

snip

So Friedland have invented the very first solenoid operated device that's fussy about its input have they? Come back when you know something about solenoids. And know why traditional doorbell transformers have at least 2 outputs and how they're used.

Just google something like "difference between ac and dc solenoid".
Maybe consider why AC and DC relays are different too.

I know what the differences are. Inductance alters voltage rating, and there's avoiding armature buzzing on ac. There are also considerations re heat dissipation when activated a high percentage of the time. All these are significant in some situations. None of these prevent a simple door dingdong working just fine on ac or dc. Nor do they alter the fact that for low duty cycle use, solenoids are very unfussy about their supply voltage.


You know a bit about electronics and think that electromechanics is
trivial. Like a lot of technicians, you've too much output and not
enough input.

Well, you're free to offer some valid content rather than daft ad hominem and foolish arguments like 'Friedland say this is the rated voltage so it must be exactly that.'


NT