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Power Supplies A to Z
We've included this handy glossary to help with the terminology & abbreviations relating to power products. Pick a letter below to begin.
| A | From 'A' to 'AWG' |
|---|---|
| B | From 'Back Electromotive Force (Back EMF)' to 'Bus Converter ' |
| C | From 'C' to 'Curve B (or Class B)' |
| D | From 'dB' to 'Dynamic Load' |
| E | From 'Earth' to 'External Fusing' |
| F | From 'F' to 'Fusible Link' |
| G | From 'Galvanic' to 'Grounded' |
| H | From 'H' to 'Hz' |
| I | From 'I ' to 'Isolation Voltage' |
| J | From 'J ' to 'Junction Field Effect Transistor (JFET)' |
| K | From 'K' to 'kWh' |
| L | From 'L ' to 'LVD' |
| M | From 'Magnetic Amplifier (Mag Amp)' to 'Multi-Resonant Topology (MRT)' |
| N | From 'Nano ' to 'NTC' |
|---|---|
| O | From 'OCV' to 'OVP' |
| P | From 'P' to 'PWM ' |
| Q | From 'Quarter Brick ' to 'Quarter Brick ' |
| R | From 'R' to 'RS485' |
| S | From 'S' to 'System International d’Unites (SI)' |
| T | From 't' to 'TUV ' |
| U | From 'U' to 'USB' |
| V | From 'V' to 'Vss' |
| W | From 'W' to 'Working Voltage' |
| X-Z | From 'X ' to 'Zetta ' |
| # | From '°C ' to '°F ' |
Term of the day : 'Power Factor Correction'
A technique to counteract the effect caused by loads that have a power factor below 1 (less than 100%). Power factor correction is necessary as it increases the efficiency of power transmission. A low power factor load increases losses in the transmission lines. Passive PFC uses an inductor to pass current at the supply frequency (usually 50Hz or 60Hz) with additional capacitors to bring the power factor close to 1. Active PFC usually employs a Boost Converter between the bridge rectifier and the reservoir capacitors to maintain the power factor close to 1. Active PFC usually provides wide range input to the power supply.