Heathkit GDA 1205 4 Schematic
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Extracted text from Heathkit GDA 1205 4 Schematic (Ocr-read)
Page 1
'01
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SIGNAL 0
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SCHEMAT-lc or THE
HEATH-MTG)
DIGITAL 'PROPORTFONIL SERVO
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L.....____..___... ......_....I
NOTES, _ _ ' 7. ALL VOLTAGES ARE MEASURED WITH A HIGH IMPEDANCE VOLTMETER FROM
. THE POINT [NDTCATED TO COMMON GROUND. VOLTAGES MAY VARY i207o.
1. ALL RESISTORS ARE 1/4 WATT. RESISTOR VALUES ARE IN OHMS IK=1000J.
3. REFER TO THE SERVO PHOTOGRAPH AND CIRCUIT BOARD X-RAY VIEW FOR
2. ALL CAPACITOR VALUES ARE IN 11F UNLESS OTHERWISE MARKED. THE PHYSICAL LOCATION OF PARTS
3. OTHIS SYMBOL INDICATES A POSITIVE oc VOLTAGE MEASUREMENT.
4. THIS' SYMBOL INDICATES THE NORMAL OPERATING VOLTAGE RANGE.
FLAT SIDE
5. VOLTAGE 0N PIN 2 OF THE lC IS VARIABLE FROM 0.2 T0 0.4, DEPENDING
ON THE INPUT PULSE. VOLTAGE SHOWN IS WITH THE SERVO IN THE CENTER
OF TRAVEL.
MP56'5'62
6. VOLTAGE 0N PIN 6 OF THE [C IS VARIABLE FROM 1.5 T0 2.7, DEPENDING
ON THE INPUT PULSE. VOLTAGE SHOWN IS WITH THE SERVO IN THE CENTER
OF TRAVEL.