Equipment information
Keithley 244 Power supply
Manufacturer:
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Model:
244
Date:
1977
Category:
Group:
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.
Manual Type:
Service and User Manual
Pages:
36
Size:
1.71 Mbytes (1792262 Bytes)
Language:
english
Revision:
Fourth Printing
Manual-ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
2012 05 27
MD5:
e49578e58a31b8fa7fbcf86bfa519cc5
Downloads:
2856
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