zener diode identification help.

k7elp60

Joined Nov 4, 2008
562
I agree with MaxHeadRoom. The device looks like it has a crack in the case.
They are designed to absorb a voltage spike, that's what looks like happened.
 

Thread Starter

Qsilverrdc

Joined Aug 3, 2014
66
115ac is across a 5w 3ohm in series with this Device.
A bridge rectifier taps in parallel with the device.
It got hooked to 220ac and some smoke came out.
 

Thread Starter

Qsilverrdc

Joined Aug 3, 2014
66
Ok..
Thanks.. I think I see how its a TVR.
I have included the circuit that this is in.
Oh. I found that the 3 ohm resistor is open.
Hope the squib and resistor are all that are wrong.
.....
So to anyone... what voltage is the DC motor.
It rectifies at about ??? Half wave 170vdc peek.
So Va to ground after bridge is ??

This circuit runs a DC motor forward or reverse by rocker.

I would like to know a little more.

Rich
 

ian field

Joined Oct 27, 2012
6,536
It appears to be MOV not a zener?
Is there a problem that you need to identify it?
Max.
The "241" is probably the same old 2 digits and multiplier; 240V - would be a fairly generous margin for 110V mains.

They have a bit of a tendency to shatter or disintegrate when they fail - but I'm not too sure just how bad the resin dipped variety can get before you can see visible signs.
 

Thread Starter

Qsilverrdc

Joined Aug 3, 2014
66
There is another board I am working on fixing.
The device is about .25" wide .12" thick and .35" tall.
Silver. I'm pretty sure it's a capacitor of some kind.
Can sort of see layers thru the end.
Silver component on left..

Can anyone tell for sure?

Thanks.
 

Attachments

ian field

Joined Oct 27, 2012
6,536
There is another board I am working on fixing.
The device is about .25" wide .12" thick and .35" tall.
Silver. I'm pretty sure it's a capacitor of some kind.
Can sort of see layers thru the end.
Silver component on left..

Can anyone tell for sure?

Thanks.
There are some pretty good clues in the screen print on the PCB.
 
Top