DEC standard modular regulators - Revision history

Jnc: Oops, that was supposed to be an 'add'

2023-07-10T15:05:53Z

Oops, that was supposed to be an 'add'

Jnc: New cat

2023-07-10T15:04:09Z

New cat

Jnc: New cat

2022-06-16T02:18:30Z

New cat

Jnc: link VI conversion

2022-03-27T05:07:12Z

link VI conversion

Jnc: Effing early MOS and its 12V/15V nonsense!

2022-01-12T12:11:44Z

Effing early MOS and its 12V/15V nonsense!

Jnc: Two more bricks, from the -11/60

2022-01-11T22:01:54Z

Two more bricks, from the -11/60

Jnc: /* Connectors */ +img

2021-12-23T17:29:24Z

‎Connectors: +img

Jnc: Clarify male/female shells; +See also, External links

2021-12-11T00:23:03Z

Clarify male/female shells; +See also, External links

Jnc: Jnc moved page DEC standard modular regulator to DEC standard modular regulators: Article is plural

2018-09-26T21:39:34Z

Jnc moved page DEC standard modular regulator to DEC standard modular regulators: Article is plural

Jnc: Explain efficiency impact on xformer

2018-09-24T15:18:32Z

Explain efficiency impact on xformer

← Older revision		Revision as of 15:05, 10 July 2023
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	** [https://www.connectorpeople.com/Connector/TYCO-AMP-TE_CONNECTIVITY/1/1-480460-0 female shells (for male pins)]		** [https://www.connectorpeople.com/Connector/TYCO-AMP-TE_CONNECTIVITY/1/1-480460-0 female shells (for male pins)]

		+	[[Category: DEC Electrical]]
	[[Category: DEC Power Supplies]]		[[Category: DEC Power Supplies]]

← Older revision		Revision as of 15:04, 10 July 2023
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	** [https://www.connectorpeople.com/Connector/TYCO-AMP-TE_CONNECTIVITY/1/1-480460-0 female shells (for male pins)]		** [https://www.connectorpeople.com/Connector/TYCO-AMP-TE_CONNECTIVITY/1/1-480460-0 female shells (for male pins)]

−	[[Category: DEC ~~Electrical~~]]	+	[[Category: DEC Power Supplies]]

← Older revision		Revision as of 02:18, 16 June 2022
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	** [https://www.connectorpeople.com/Connector/TYCO-AMP-TE_CONNECTIVITY/1/1-480460-0 female shells (for male pins)]		** [https://www.connectorpeople.com/Connector/TYCO-AMP-TE_CONNECTIVITY/1/1-480460-0 female shells (for male pins)]

−	[[Category: DEC ~~Hardware~~]]	+	[[Category: DEC Electrical]]

@@ Line 12: / Line 12: @@
 These regulators all used switching techniques (likely one of the earliest [[switching power supply]] designs); they differed from later switching supplies (which generally dispense entirely with a large [[transformer]] as the first thing on the [[alternating current|AC]] input), in that they take as input 30V AC supplied by the 'mother' system using a large (and heavy!) isolation/step-down transformer.
-Although the DEC technical manual does not make this clear, the output stage is increasing the output [[current]], over the input, in order to have high overall efficiency. It uses what it called a [[buck converter]], where some of the energy from a 'block' of incoming high-[[voltage]] current is stored in the [[magnetic field]] of a large [[inductor]], and then used to supply current when the [[direct current|DC]] from the initial AC/DC converter stage is turned off by the switching function of the supply.
+Although the DEC technical manual does not make this clear, the output stage is increasing the output [[current]], over the input, in order to have high [[VI conversion|overall efficiency]]. It uses what it called a [[buck converter]], where some of the energy from a 'block' of incoming high-[[voltage]] current is stored in the [[magnetic field]] of a large [[inductor]], and then used to supply current when the [[direct current|DC]] from the initial AC/DC converter stage is turned off by the switching function of the supply.
 This allows these regulators to be much more efficient than a [[linear power supply]], where excess voltage (and its energy) on the fixed current throughput is simply discarded. Ironically, the large input transformer would be ''even larger and heavier'' were it not for this efficiency gain (which means less input power is needed to reach the desired output), and the fact that the current in the secondary is lower because of the higher output voltage (which the switching supply can use efficiently, above).

@@ Line 7: / Line 7: @@
 * [[H754 +20V, -5V Regulator]]
 * [[H781 +5V, +15V Regulator]]
-* [[H785 +5V, +12V, -12V Regulator]] (and later version, H7850)
+* [[H785 +5V, +15V, -15V Regulator]]
 These regulators all used switching techniques (likely one of the earliest [[switching power supply]] designs); they differed from later switching supplies (which generally dispense entirely with a large [[transformer]] as the first thing on the [[alternating current|AC]] input), in that they take as input 30V AC supplied by the 'mother' system using a large (and heavy!) isolation/step-down transformer.

@@ Line 6: / Line 6: @@
 * [[H745 -15V Regulator]]
 * [[H754 +20V, -5V Regulator]]
 These regulators all used switching techniques (likely one of the earliest [[switching power supply]] designs); they differed from later switching supplies (which generally dispense entirely with a large [[transformer]] as the first thing on the [[alternating current|AC]] input), in that they take as input 30V AC supplied by the 'mother' system using a large (and heavy!) isolation/step-down transformer.
@@ Line 13: / Line 15: @@
 This allows these regulators to be much more efficient than a [[linear power supply]], where excess voltage (and its energy) on the fixed current throughput is simply discarded. Ironically, the large input transformer would be ''even larger and heavier'' were it not for this efficiency gain (which means less input power is needed to reach the desired output), and the fact that the current in the secondary is lower because of the higher output voltage (which the switching supply can use efficiently, above).
-The [[7014251 +12VB and +5VB Battery Backup Regulator]], used with the [[H775D Battery Backup Unit]], is another in the series.
+The [[7014251 +12VB and +5VB Battery Backup Regulator]], used with the [[H775D Battery Backup Unit]], is another in the series, as is the [[54-11086 -15V Regulator]]
 ==Connectors==

← Older revision		Revision as of 17:29, 23 December 2021
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	==Connectors==		==Connectors==
		+
		+	[[Image:8PinMateNLok.jpg\|250px\|thumb\|right\|8-pin MATE-N-LOK connectors; female shell (male pins) on left, male shell (female pins) on right]]

	All use a common connector (which carries both input and output [[conductor]]s), an 8-pin 'Commercial MATE-N-LOK', made by AMP. The power harness uses a female shell (housing; AMP calls them 'caps') with male pins; the regulators use a male shell (AMP calls them 'plugs') with female sockets (pins).		All use a common connector (which carries both input and output [[conductor]]s), an 8-pin 'Commercial MATE-N-LOK', made by AMP. The power harness uses a female shell (housing; AMP calls them 'caps') with male pins; the regulators use a male shell (AMP calls them 'plugs') with female sockets (pins).

@@ Line 17: / Line 17: @@
 ==Connectors==
-All use a common connector (which carries both input and output [[conductor]]s), an 8-pin 'Commercial MATE-N-LOK', made by AMP. The power harness uses a female shell (housing) with male pins; the regulators use a male shell with female sockets (pins).
+All use a common connector (which carries both input and output [[conductor]]s), an 8-pin 'Commercial MATE-N-LOK', made by AMP. The power harness uses a female shell (housing; AMP calls them 'caps') with male pins; the regulators use a male shell (AMP calls them 'plugs') with female sockets (pins).
 The female shell is AMP part # 1-480460-0, pin part # 60620-1; the male shell is part # 1-480459-0, pin part # 60619-1. (There are a large number of different pin options: 30-22, 24-18, and 20-14 gauge; tin and gold plated; and brass and phosphor-bronze material. The part numbers given are for tinned brass, 20-14 gauge.)
@@ Line 24: / Line 24: @@
 Pins 6, 7 and 8 of the common connector are used for the AC input, but each of the three types of regulator uses a different pair of pins, with the third left un-connected; thus, if a regulator is plugged into the wrong connector on the [[power harness]], no harm results.
 [[Category: DEC Hardware]]

← Older revision	Revision as of 21:39, 26 September 2018
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