Difference between revisions of "H745 -15V Regulator"
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It took its AC input on pins 6 and 8, and it also used +15V input on pins 4 and 5 (why two pins is unclear, since the +15V supply was of limited current); the 15V output was on pin 1, and the [[ground return]] on pins 2 and 3. Pin 7 was not connected. | It took its AC input on pins 6 and 8, and it also used +15V input on pins 4 and 5 (why two pins is unclear, since the +15V supply was of limited current); the 15V output was on pin 1, and the [[ground return]] on pins 2 and 3. Pin 7 was not connected. | ||
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[[Category: DEC Hardware]] | [[Category: DEC Hardware]] | ||
Revision as of 14:59, 21 September 2018
The H745 -15V Regulator is one of the DEC standard modular regulators. It can produce an output current of up to 10A at an output voltage of -15V. It has over-current and over-voltage detection and protection.
It was a switching power supply, one of the earliest; however, the basic concept was quite different from later supplies of this type, as it was still quite low efficiency.
It takes as input AC at a voltage of 20V-30V, runs it through a diode bridge and filter capacitor to convert it to DC. That is then run through several large transistors controlled by a monolithic integrated circuit voltage regulator to produce the output.
It took its AC input on pins 6 and 8, and it also used +15V input on pins 4 and 5 (why two pins is unclear, since the +15V supply was of limited current); the 15V output was on pin 1, and the ground return on pins 2 and 3. Pin 7 was not connected.
