Keithley 246 Netzteil
Hersteller:
Bild 1 von 1
Wenn du irgendwelche anderen Fotos oder Handbücher für ein
Keithley 246 hast,
kannst du die Dateien hier hochladen .
Modell:
246
Datum:
1967
Kategorie:
Gruppe:
Beschreibung:
High Voltage Supply
Information
GENERAL
The Keithley model 246 is a high voltage supply which
provides accurate, stable outputs from 0 to 3100 volts dc.
Accuracy is ±1% of the dial setting for all outputs.
Stability is ±0.01% ±2 millivolts the first hour or in
subsequent 8-hour periods, after a 1-hour warm-up. Line
regulation is 0.001% plus 2 millivolts for a 10% change in
line voltage, and load regulation is 0.002% plus 2
millivolts from no load to full load.
FEATURES.
a. Three in-line calibrated dials set the output voltage in
10-volt steps. The fourth dial is a potentiometer that
permits interpolation between steps with 50-millivolt
resolution. Output can be selected positive or negative with
respect to ground.
b. Repeated overloading or operation in an overload
condition for long periods will not damage the model 246.
Overload protection limits the output current to less than
13 milliamperes and, when the overload is removed,
automatically returns the Supply to its set value .
c. The circuit for the model 246 takes advantage of the
reliability and stability of a solid-state comparator
amplifier, and the high voltage capability of two stacked
series regulator tubes to provide a high performance
circuit. Metal-film range resistors and a selected zener
diode contribute to its overall accuracy and stability.
1-3. APPLICATIONS.
a. The model 246 is an ideal high voltage biasing supply for
photomultiplier tubes, ion chambers, photocells and other
current detectors. It is also suited for use in applications
such as voltage gradient studies, surface and volume
resistivity measurements and capacitor leakage measurements.
b. The output of the Voltage Supply may be remotely
controlled or programmed by adding connectors to the rear
panel. Mounting holes are provided to easily modify the
model 246.
Dokumenttyp:
Service- und Bedienungsanleitung
Seiten:
50
Größe:
4.30 Mbytes (4508326 Bytes)
Sprache:
english
Revision:
Dokument-ID:
Datum:
1967 01 01
Qualität:
Gescanntes Dokument, teilweise schwer oder teilweise nicht zu lesen.
Upload Datum:
2018 08 23
MD5:
6956bb818e90d082768ccbcafc4f8136
Downloads:
486
Information
model 246 SPECIFICATIONS. . . .
1, , GENERAL DESCRIPTION ...
1-1. General ...
1-2.
1-3. Applications ...
2, . OPERATION ...
2-1. Connections ...
2-2. Preliminary Procedures.
2-3. Operating Checks. . . .
2-4. Setting Output Voltage.
2-5. Overload Operation. . .
2-6. Capacitive Loads. . . .
2-7. Output Noise ...
2-8. Short-Term Stability, .
2-9. Temperature Coefficient
2-10. Remote Programing . . .
2-11. model 246 Modifications
for Resistance
Programing ...
2-12. Circuit for Resistance
Programing ...
2-13. Operation for Resistance
j Programing ...
2-14. model 246 Modifications
for Voltage Programing.
2-15. Circuit for Voltage
Programing ...
2-16. Operation for Voltage
Programing ... . 11
3. , CIRCUIT DESCRIPTION. . . . . 13
3-1. General ... . 13
3-2. High and Low Voltage
Supplies ... . 13
3-3. Voltage Control. . . . . 13
3-4. Output Voltage ... . 14
3-5. Current Control. . , . . 14
4. . SERVICING ... . 15
4-1. General. ... . 15
4-2. Servicing Schedule . . . 15
4-3. Parts Replacement. . . . 15
4-4. Troubleshooting. . . . . 17
4-5. Procedures to Guide
Troubleshooting. . . . . 17
4-6. Transformer Check.. , . . 18
4-7. Troubleshooting the Volt-
age Control Amplifier. . 18
4-8. Troubleshooting the
Current Limit Circuits . 18
4-9. Troubleshooting the
Overload Lamp Circuit. . 19
4-10. Output Noise ... . 20
5. CALIBRATION ...
5-1. General ... . 21
5-2. Calibration Schedule. . . 21
5-3. Zero Balance Adjustment . 21
5-4. Voltage Calibration . . . 21
5-5. Current Limit Circuit
6. Accessories ...
6-1. Rack Mounting ... . 29
6-2. Model 3008 Bench
Mounting Kit ...
6-3. MHV Mating Connector
Cable Assemblage. . . . . 30
7. REPLACEABLE PARTS ...
7-1. Replaceable Parts List. . 33
7-2. How to Order Parts. . . . 33
model 246 Replaceable
. 34
model 246 Schematic
Diagram 21176E ... . 41
Green Calibration and
^Change Notice Last page
* Yellow change notice sheet is in-
eluded only for instrument modifi-