Lambda Regulated Power Supply – Model LRS 57-28 (Industrial / Lab Grad - $75 (concord / pleasant hill / martinez)

Lambda Regulated Power Supply – Model LRS 57-28 (Industrial / Lab Grad 1

Lambda Regulated Power Supply – Model LRS 57-28 (Industrial / Lab Grad 1 thumbnail

make / manufacturer: Lambda

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Heavy-duty Lambda Electronics regulated power supply, model LRS 57-28. High quality industrial/lab equipment designed to deliver stable 28 VDC output (±5%). Built like a tank with a ventilated steel case and large internal transformer.
Specs (from unit):
• Output: 28 VDC ±5%
• Up to ~29 amps at 40°C (derates at higher temps)
• AC input selectable 110 / 220 VAC
• Industrial screw terminals for input and output
• Built-in fuse protection
Lambda power supplies were widely used in telecom equipment, laboratories, industrial systems, and aerospace electronics. Known for extremely solid construction and reliability.
Great for:
• electronics labs
• ham radio / RF setups
• industrial equipment projects
• bench power supply conversions
• collectors of vintage lab gear
Heavy professional unit with normal cosmetic wear. Untested.

post id: 7920660840

posted: 2026-03-11 18:02

updated: 2026-04-03 14:14

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Lambda Regulated Power Supply – Model LRS 57-28 (Industrial / Lab...