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Battery replacement for 16 VAC

The easiest approach (but not the cheapest) if AC is really required is to obtain a low wattage 12VDC to AC mains inverter and then use it to drive a mains to 16V (or similar) transformer. If you ...
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5 votes

What adapter do I need to replace 4 AA batteries?

You might consider checking to see if the lock mechanism operates smoothly. A sticky mechanism will increase current consumption. The mechanism must have sufficient force to overcome frictional forces ...
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6 votes
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What adapter do I need to replace 4 AA batteries?

The power source has to provide the peak current needed to operate the lock as well as the quiescent current. The short-circuit current of an alkaline AA battery could be as much as ~10A so it's ...
5 votes

What adapter do I need to replace 4 AA batteries?

A voltage adapter is a "voltage source" provides the rated voltage UP TO the rated current. So you can safely go with the larger current rating with zero chance of "burning out the ...
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1 vote
Accepted

What do I need to connect an R-SMA male to a standard coaxial male?

To connect an RP-SMA connector to an F connector, of course you need an appropriate RP-SMA-to-F-connector adapter (pay attention to male and female - I always get them mixed up with coax connectors). ...
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4 votes

Why can't I use a multi-adapter I bought in Hong Kong?

Yes, I have such an adapter. It works as well in HK as anywhere else, but has not been tested and/or does not pass the local regulatory laws (nor does it likely pass them in other places, but that's ...
1 vote

Identify this 2-pin DC connector

As someone else has already said, this appears to be an R2PPC plug also used in radio communications. Its also know as a Philmore 8464 plug. I do believe that the Cybernet CB-2 lead for CB radios ...
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0 votes

Connecting 12 V RS485 appliance (soil sensor) to USB 5 V RS485 adaptor

RS-485 does not use 12V signaling but 5V and USB devices like RS-485 adapters are powered with 5V from USB, not higher voltages. So you likely won't find a USB RS-485 adapter that also includes a ...
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