Device Identification

[normbourne]

Hi Guys,
At present I am trying to sort a power supply card from a Kaguchi injection moulder, and I have a few sold state devices which I am trying to identify, and so determine their purpose.

The first device carries the number, "3122.2V" which is a three legged device, mounted to a heat sink.

The next device, carries the number "CT0225" which again, is a three legged device, mounted to a heat sink.

The next device, carries the number "C83004" which again, is a three legged device, mounted to a heat sink.

The "CT0225" & "C83004", also carry, a bit of a diagram, which appears to be, the circuit equivalent of a PNP transistor:-

o-----I>I-----o------I<I-------o


To take them out of circuit is a bit of a bind so it would be helpful to know more about them, before taking them out.

Thanks fellahs,

Norm.

 

[MikeMl]

Two Shottky rectifiers with a common cathode, frequently used in off-line powered switching power supplies? These sound like custom labeled parts. Are they in TO-220 type packages?

 

[normbourne]

Hi Mike,

Thanks for the prompt reply, yes they are 220 case outline, although the CA83004, is also a flat pack it is larger than the standard 220.

The 3122V proves to be a Voltage regulator.

Thanks again,

Norm

 

[normbourne]

Hi Guys, Moving on, the Kaguchi injection moulder, caries the designation, Model No. KM 100b. There is a power supply board that supplies various voltages into a motherboard, into which are plugged, 4 circuit boards. I have removed the Power board, and the voltages I obtained on the power board are, 5.1 volts, 17.1 Volts, 9.8 Volts, 17.1 Volts, negative. Thinking that I had a problem with the voltages, not being standard Levels, vis. 5v 24v 12v & 24v. Neg. ..?? I replaced all the electrolytic capacitors, which I believe, are notorious for breakdown, I again carried out bench tests, but very little difference was noted. Does anyone know where I could perhaps, obtain circuit diagrams pertaining to this machine, in particular, the power supply board, and it's designed output levels. Regards, Norm.