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Regulated Power Supply

Manufacturer: Lambda Electronics Corp.
Model: 25, 28

Description

DC output voltage is electronically regulated and is practically independent of external load (within limits) and normal line voltage fluctuations, and is also substantially free from hum and noise.

Specifications

Input	105-125 V AC, 50-400 cps. 120 watts.
DC Output	200 to 325 V DC regulated from 0 to 100 ma max.
	Either positive or negative sides may be grounded.
AC Output	6.3 V AC center-tapped at 3A unregulated, Model 25.
	6.5 V AC 3A unregulated, Model 28.
DC Voltage Regulations	Output constant to better than 1% for empty through full loads.
	line voltage varies between 105 and 125 V.
Internal Impedence	Approximately 10 ohms
Noise and Ripple Output	< 10 millivolts rms for above ratings.

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Operating Instructions

Model 25

Initially, ensure that "AC-ON" and "DC-ON" switches are both OFF.
Toggle the left hand switch to the "AC-ON" position. Allow a minimal one minute warm up
Set the "DC-OUTPUT VOLTAGE" control to the desired voltage.
Toggle the right hand switch to the "DC-ON" position. The power supply is now in full operation.
To leave dc output in standby mode, toggle the "DC-ON" switch to OFF while "AC-ON" is set to ON.

Model 28

Throw toggle switch to "AC-ON" position. The pilot light should be illuminated. Allow the power supply to warm up for a minute or so.
Set output voltage with an external voltmeter. The power supply is now in full operating condition.

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keywords: voltage source, electrical source, current source.

Document created June 13, 1996. Original author: Jeremy Bailin and Jaime Espinoza.