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PowerSupplyRippleNoise.php    12182 Bytes    23-04-2024 12:16:13


Power Supply Ripple and Noise


Definition, Measurement Setup and Results




Power Supply Ripple and Noise test Setup

The Setup : An AC Source with an Electronic Load and a Picosope




✈ What is Ripple and what is Noise ???




Ripple is everything connected to the frequency charging / discharging the storage element. In a linear Power Supply this is very likely 50 Hz, 100 Hz, 150 Hz, ...

Noise is everything else.

If you want a more extended explanation, listen to Dave.




✈ Results .:. PETH-20




UNITRANGES • REMARKS
Specifications+/- 15 V, 600 mA
TypeDual Linear Power Supply
Worst Spur-65.42 dBV @ 150 Hz (Ripple), negative branch
Load was15 V, 250 mA
Remarkseach branch tested single


PETH-20

PETH-20




✈ Results .:. PETH-49




UNITRANGES • REMARKS
Specifications+ 19 V, 2000 mA
TypeSingle Linear Power Supply
Worst Spur-39.58 dBV @ 50 Hz (Ripple)
Load was12.5 V, 800 mA
RemarksDevice in use for many years


PETH-49




✈ Results .:. PETH-9910




UNITRANGES • REMARKS
Specifications+ 8...16 V, 10 A
TypeSingle Linear Power Supply
Worst Spur-68.29 dBV @ 150 Hz (Ripple)
Load was13.8 V, 2500 mA
Remarks...


PETH-9910




✈ Results .:. Straton 3240.2




UNITRANGES • REMARKS
Specifications+ 8...16 V, 5 A
TypeSingle Linear Power Supply
Worst Spur-58.53 dBV @ 150 Hz (Ripple)
Load was13.7 V, 2840 mA
RemarksCommercial Equipment


Straton 3240.2<




✈ Results .:. VOLTCRAFT VLP2430




UNITRANGES • REMARKS
Specifications+ 0...40 V, 3 A
TypeDouble Linear Power Supply
Worst Spur-58.71 dBV @ 150 Hz (Ripple)
Load was15 V, 1250 mA
RemarksCommercial Equipment, only left branch tested


VOLTCRAFT VLP2430<




✈ Results .:. TTI PL330




UNITRANGES • REMARKS
Specifications+ 0...32 V, 3 A
TypeSingle Linear Power Supply
Worst Spur-70.61 dBV @ 150 Hz (Ripple)
Load was15 V, 1250 mA
RemarksCommercial Equipment


TTI PL330




✈ Results .:. XP VCT60US24




UNITRANGES • REMARKS
Specifications+ 24 V, 2.5 A
TypeSwitch Mode Power Supply
Worst Spur-62.9 dBV @ 206.8 Hz
Load was24 V, 740 mA
RemarksCommercial Equipment


XP VCT60US24<




✈ Results .:. Keysight U8001A




UNITRANGES • REMARKS
Specifications0...30 V, 3 A
TypeUnknown Mode Power Supply
Worst Spur-71.99 dBV @ 150 Hz (Ripple)
Load was15 V, 1250 mA
RemarksCommercial Equipment


Keysight U8001A<




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t1 = 6585 d

t2 = 181 ms

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