Equipment information:

Keithley 244 Power supply
Manufacturer:
Keithley
Model: 244
Date: 1977
Category: Measurement instruments
Group: Power supply
Description: HIGH VOLTAGE SUPPLY
Information:
                                    GENERAL. The Model 244 is a negative-polarity
high-voltage supply that provides accurate, stable
outpote from -200 to -2200 volts d-c at up to 10 ,,$.
"l~Xi"l"Ul.
1-2. FEATURES.
a. In-line Calibrated Dials.- Two dials set the
output voltage in 200 and ZO-volt steps. Trim Control
permits interpolation between ZO-volt setting, with
100 millivolt resolution.
b. Overload Protection.- Repeated or continuous
overloads will not damage the instr,m,ent. Protection
circuit limits the oucput current to less than 13
milliamperes with automatic recovery when overload is
removed.
c. Stability.- Solid-state design, stable range
resistors, and selected zener diode provide voltage
stability of +0.005% for B-hour periods after onehour
warm-up.
d. Model 2441 Overload Protection Option.- A,,
optional protection circuit is available (on special
order) which can be used to limit the current of the
Model 244 when monitored by e Keithley picoammeter
such es the Model 414A.

These manuals are available for the above equipment:

Keithley -- 244 -- Service and User Manual
File name: Keithley-3533-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 36
Size: 1.71 Mbytes (1792262 Bytes)
Language: english
Revision: Fourth Printing
Manual-ID/Number:
Date: December 1977
Quality: Scanned document, all readable.
Upload date:
MD5: e49578e58a31b8fa7fbcf86bfa519cc5
ed2kID: 1b0a52cb43eba147ab57d5286a611c16
Downloads: 277 since 27 May 2012
Information:
SPECIFIC.4TIONS .................................... iv
1. GENERAL DESCRIPTION. ............................... 1
2. OPERATION. .................................... 4
3. CIRCUIT DESCRIPTION. ............................... 6
4. ACCESSORIES .................................... 8
5. REPLACEABLE PARTS. ................................ 13
6. CALIBRATION .................................... 19
SCHEMATICS ...................................... 25
Keithley-3533-Manual-Page-1-Picture
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