Equipment information:

Keithley 242 Power supply
Manufacturer:
Keithley
Model: 242
Date: 1965
Category: Measurement instruments
Group: Power supply
Description: REGULATED HIGH VOLTAGE SUPPLY
Information:
                                    The Keithley Model 242 Regulated High Voltage Supply provides accurate,
stable outputs between 300 and 3500 volts dc. Accuracy is -0.1% for all loads up to 25
milliamperes. Stability is 20.01% for six months after a 30-minute warm-up. Line regulation
is within ?O.OOS% for a 10% change in line voltage, and load regulation is within
+/- O.OOS% from zero to full load.

These manuals are available for the above equipment:

Keithley -- 242 -- Service and User Manual
File name: Keithley-3532-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 28
Size: 1.38 Mbytes (1447944 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date: October 1965
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: 44e49f140bc75a86188128d789d571f2
ed2kID: 8b47ed3bc6d726d8f3f49c57a63c70af
Downloads: 168 since 27 May 2012
Information:
GENERAL DESCRIPTION ........ 1
l-1. General ........... 1
1-2. Features .......... 1
l-3. Applications ........ 1
1-4. Specifications ....... 2
1-5. Accessories ......... 2
l-6. Equipment Received ..... 2
OPERATION. ............ 3
2-1. Front Panel Controls and
Terminals ......... 3
2-2. Operating Procedures .... 4
2-3. Overloads .......... 4
2-4. Floating Operation ..... 4
CIRCUIT DESCRIPTION ........ 5
3-l. General ........... 5
3-2. AC Control Circuits ..... 5
3-3; Low and High Voltage Supplies 5
3-4. Regulator Circuit ...... 6
SERVICING. ............ 7
4-1. General ........... 7
4-2. Servicing Schedule ..... 7
Section Page
5.
6.
4-3. Parts Replacement . . . . . . 7
4-4. Troubleshooting . . . . . . . 7
4-5. Procedures to Guide
Troubleshooting , . . . , , 8
4-6. Correcting for No Output , . 9
4-7. Correcting for Inaccurate
Voltage Output . . . . . . . 9
4-a. Bias Adjustment , . . . . . .lO
4-9. Improperly Working Overload .lO
CALIBRATION . . . . . . . . . . . .ll
5-1. General . . . . . . . . . . .ll
5-2. Calibration Schedule . . . .ll
5-3. Output Calibration . . . . .ll
REPLACEABLE PARTS . . . . . . . . .17
6-l. Replaceable Parts List . . .17
6-2. How to Order Parts . . . . .17
Model 242 Replaceable Parts
List . . . . . . . . . . .~ .18
Model 242 Schematic Diagram
14661D . . . . , . , . . . .25
'*Change Notice
QkYellow Change Notice sheet is included only
for instrument modifications affecting the
Instruction Manual.
Keithley-3532-Manual-Page-1-Picture
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