 Posted: Fri Jun 04, 2021 7:13 am Post subject: |
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| Hello, I'm repairing a Keithley 3330 LCZ meter. I found that the output voltage is only 1/3 of the configured output voltage. It outputs 336mV when it should output 1V and it outputs 16.84mV when it should output 50mV. Both cases only about 33.6% of the configured voltage is output. I have the service manual but there is no schematics so difficult to troubleshoot without taking the PCB out. There is a block diagram with an output buffer amplifier, which could be the culprit. If anyone has the schematics I would greatly appreciate to get a copy! Thanks. |
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| Posted: Sun Feb 18, 2018 9:34 pm Post subject: |
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| http://nte01.nteinc.com/nte%5CNTExRefSemiProd.nsf/$$Search?CreateDocument&Query=c3330 | |
| Posted: Sun Feb 18, 2018 9:32 pm Post subject: |
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| http://www.donberg.co.uk/descript/2/2sc_3330.htm https://www.ebay.ca/itm/2SC3330-C3330-Sanyo-Transistor-Lot-of-2-pieces-/200795691322 |
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| Posted: Sun Feb 18, 2018 9:09 pm Post subject: equivalent transistor for 3330 |
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| hi to all, did you know what can be the equivalent of 3330, like in picture?  |
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