Supply Transformer
Power supply transformer 120 Vac to 13.8 vdc with 0.9A?
I saw that the power supply primary winding has a capcitor parellel with the winding. What is the purpose of that capcitor?
probably the transformer is a regulating ferroresonant type transformer, and the cap sets a resonant point. It partially regulates the AC voltage so that the supply doesn't have as heavy a thermal load.
http://www.allaboutcircuits.com/vol_2/chpt_9/6.html
.
 |
 Moonlight Aquarium Fish Tank Lighting 6 LEDS 13,000MCDs  US $13.99
|
 Moonlight Aquarium Fish Tank Lighting 4 LEDS 13,000MCDs US $12.95
|
 Power Failure Backup Auto Switching AC/DC Air Pump S-80 US $12.50
|
 Metal Halide Lamp Light 400 Watt Bulb No Reserve Free o US $4.50
|
 AQUA ULTRAVIOLET UV STERILIZER TRANSFORMER 8 WATT US $57.95
|
 AQUA ULTRAVIOLET UV STERILIZER TRANSFORMER 25 WATT US $59.95
|
 AQUA ULTRAVIOLET UV STERILIZER TRANSFORMER 40 WATT US $85.95
|
 AQUA ULTRAVIOLET UV STERILIZER TRANSFORMER 57 WATT US $89.95
|
 LED Driver Switching Power Supply Transformer 5Watt 12V US $12.75
|
 LAGUNA POWERGLO POND LIGHT MINI KIT. NEW! US $39.99
|
 Replacement HQI Ballast 1 x 250 Watt/ with Enclosure US $204.95
|
 Ergo AUTOMATIC OUTDOOR PET / POND FEEDER 2000PFM! utm US $179.99
|
 BOOSTER PUMP REVERSE OSMOSIS RO DI WATER FILTER 6800 US $84.00
|
 Moonlight Aquarium Lighting (10) Wide Angle 13,000MCD's US $35.95
|
 REVERSE OSMOSIS RO DI 6800 BOOSTER PUMP +TRANSFORMER US $84.00
|
 LED Blue Light Submersible Turbo Air Pump/Aerator PY@03 US $13.60
|
 Outdoor Bird, Pet and Pond Feeder - Large US $193.99
|
 AQUA ULTRAVIOLET UV STERILIZER TRANSFORMER 15 WATT 2000 US $56.95
|
 AQUA ULTRAVIOLET UV STERILIZER TRANSFORMER 8 WATT 2000 US $54.95
|
 AQUA ULTRAVIOLET UV STERILIZER TRANSFORMER 80 WATT NEMA US $119.95
|
 AQUA ULTRAVIOLET UV STERILIZER TRANSFORMER 15 WATT US $58.95
|
 BOOSTER PUMP +TRANSFORMER AQUATEC 6800 RO DI 50 GPD US $84.00
|
 BOOSTER PUMP 100 GPD W/POWER RO DI REVERSE OSMOSIS US $69.99
|
 RESUN 0.25g OZONE PROCESSOR New US $93.00
|
 Jebo 36w UV Ultraviolet Sterilizer + bulb New US $99.00
|
 Moonlight Aquarium Lighting 5 LEDs 13,000MCD Max Bright US $26.95
|
 BOOSTER PUMP RO DI FILTER AQUATEC 8800 REVERSE OSMOSIS US $98.00
|
 AQUARIUM FILTER BOOSTER PUMP 6800 REVERSE OSMOSIS RO DI US $84.00
|
 Multi-function Aquarium Tank Perpetual Calendar Pen Box US $90.00
|
 IceCap LunarLite LED Retro KIt 470nm 21.6" US $63.40
|
 IceCap LunarLite LED Retro KIt 470nm 33.4" US $86.25
|
 IceCap LunarLite LED Retro KIt 470nm 45.2" US $107.95
|
 Pondmaster Pond UV filter clarifier - 10 watt UV light US $140.00
|
 Pondmaster Pond UV filter clarifier - 20 watt UV light US $169.00
|
 2 Complete 4 Light Moonlight Aquarium Systems 13,000MCD US $37.95
|
 2 Complete Moonlight Aquarium Light Systems 13,000MCD US $35.95
|
 Root Therm 160 Aquarium Undergravel Cable Heater US $45.86
|
 Moonlight Aquarium Lighting 6 LEDs 13,000MCD Max Bright US $25.95
|
 BOOSTER PUMP+TRANS. AQUATEC 6800 REVERSE OSMOSIS RO DI US $84.00
|
 BOOSTER PUMP 100 PSI REVERSE OSMOSIS WATER FILTER RODI US $69.50
|
 BOOSTER PUMP+TRANSFORMER RO DI WITH MANUAL REGULATOR US $69.99
|
 Rena LG100 Programmable Automatic Fish Feeder US $59.77
|
4,000 volt power supply (microwave transformers)