Part identification

I'll take a guess that it's a relay: RC: Relay Contact

--Marc

reed relay

Maybe a reed relay.

I thought the same. But I hesitated to post due to the high inductance quoted.

Inductance measurements are often wrong. But then, 1200 ohms is a lot of turns.

Indeed. I did not try to dig into some analysis, but it seemed to me that it is not easy to create a half-henry solenoid with only a reed in the center. I must be wrong.

In any case it appears that a couple of more tests are needed to verify. My suggestion would be to apply a variable lab power supply and increase the voltage between the outside leads with an ohmmeter on the other two wires.

Might also place a strong magnet near the device and check continuity.

I am sure that this is a reed relay. We just moved so I can't find my

Swinging a magnet near it will show if the contacts close (the middle wires of the three and the single wire other end), and slowly dial it up from around 4VDC to see where it trips.

Checking a few of my old reed relays (we fix old arcade games), 5V relays are roughly 300 to 500R, 24V relays are around 2K, and 12V around

John :-#)#

Marc Guardiani schrieb:

Hi Marc

Bingo! It's obviously a reed relay. This resulted in a hefty slap onto my forehead - I should have had that idea myself .

To my surprise, the contact closes at about 2.2 V and without audible click; instead, there is a click with opening.

As to the relay's dimensions: length = 27 mm/1.08 " diameter = 11 mm/0.43 "

Many thanks to you and all the other supporters!

Best regards

Reinhard

If it is 12V coil that's and 120mW coil dissipation. Couple of dozen 12V/1Kohm reeds listed on Mouser.

My best guess: Looks seems to indicate a HV flyback, added to measurement to indicate built-in rectifying diode to output (left side).

THAT is even more plausible and very likely.