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เราจะทำแบบวิศวกรผู้ยิ่งใหญ่
25. December 2024
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avg = 0.0 , n = 0
PowerSupplyRippleNoise.php 12204 Bytes 16-10-2024 04:51:29
Power Supply Ripple and Noise
Definition, Measurement Setup and Results
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.
Noise is everything else.
If you want a more extended explanation, listen to Dave.
✈ Results .:. PETH-20
| UNIT | RANGES • REMARKS |
| Specifications | +/- 15 V, 600 mA |
| Type | Dual Linear Power Supply |
| Worst Spur | -65.42 dBV @ 150 Hz (Ripple), negative branch |
| Load was | 15 V, 250 mA |
| Remarks | each branch tested single |
✈ Results .:. PETH-49
| UNIT | RANGES • REMARKS |
| Specifications | + 19 V, 2000 mA |
| Type | Single Linear Power Supply |
| Worst Spur | -39.58 dBV @ 50 Hz (Ripple) |
| Load was | 12.5 V, 800 mA |
| Remarks | Device in use for many years |
✈ Results .:. PETH-9910
| UNIT | RANGES • REMARKS |
| Specifications | + 8...16 V, 10 A |
| Type | Single Linear Power Supply |
| Worst Spur | -68.29 dBV @ 150 Hz (Ripple) |
| Load was | 13.8 V, 2500 mA |
| Remarks | ... |
✈ Results .:. Straton 3240.2
| UNIT | RANGES • REMARKS |
| Specifications | + 8...16 V, 5 A |
| Type | Single Linear Power Supply |
| Worst Spur | -58.53 dBV @ 150 Hz (Ripple) |
| Load was | 13.7 V, 2840 mA |
| Remarks | Commercial Equipment |
✈ Results .:. VOLTCRAFT VLP2430
| UNIT | RANGES • REMARKS |
| Specifications | + 0...40 V, 3 A |
| Type | Double Linear Power Supply |
| Worst Spur | -58.71 dBV @ 150 Hz (Ripple) |
| Load was | 15 V, 1250 mA |
| Remarks | Commercial Equipment, only left branch tested |
✈ Results .:. TTI PL330
| UNIT | RANGES • REMARKS |
| Specifications | + 0...32 V, 3 A |
| Type | Single Linear Power Supply |
| Worst Spur | -70.61 dBV @ 150 Hz (Ripple) |
| Load was | 15 V, 1250 mA |
| Remarks | Commercial Equipment |
✈ Results .:. XP VCT60US24
| UNIT | RANGES • REMARKS |
| Specifications | + 24 V, 2.5 A |
| Type | Switch Mode Power Supply |
| Worst Spur | -62.9 dBV @ 206.8 Hz |
| Load was | 24 V, 740 mA |
| Remarks | Commercial Equipment |
✈ Results .:. Keysight U8001A
| UNIT | RANGES • REMARKS |
| Specifications | 0...30 V, 3 A |
| Type | Unknown Mode Power Supply |
| Worst Spur | -71.99 dBV @ 150 Hz (Ripple) |
| Load was | 15 V, 1250 mA |
| Remarks | Commercial Equipment |
✈ Share your thoughts
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|
t1 = 6740 d
t2 = 229 ms |
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