Keithley 242 Compteur de fréquence
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Modèle:
242
Date:
1965
Catégorie:
Groupe:
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.
Type manuel:
Service et Manuel de l'utilisateur
Pages:
28
Taille:
1.38 Mbytes (1447944 Bytes)
Langue:
english
Révision:
Manuel-ID:
Date:
Qualité:
Document scanné, la lecture en partie mal, en partie illisible.
Date de transfert:
2012 05 27
MD5:
44e49f140bc75a86188128d789d571f2
Téléchargements:
759
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 ... , , 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
5-3. 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.