12+12V 25VA Toroid / Toroidal Small Power Transformer

You are bidding on a new 25VA toroidal transformer. It is precisely made for high-end power supply. It has very low power loss and magnetic leak. Labeled input 115 + 115 Vac (Dual coils) and outputs 12Vac x 2 (dual coils). It has CE certified. Mounting hardware is included. The test results are excellent. (note: Please increase 10% of rated power when this transformer use in 60 Hz power source)

Open Circuit Test (core loss test):

TEST CONDITION: Apply variable voltage to primary coil (115V terminals) from 115-140VAC at 60Hz. No load on secondary coils.
1. Primary V = 115VAC, Primary I = .01A or core loss is 1.0Watt.
2. Primary V = 140VAC, Primary I = .01A

Short Circuit Test (copper loss test):

TEST CONDITION: Apply variable voltage to primary coil (115V terminals) from 1-20VAC at 60Hz and short circuit on secondary coils. The test result is 14.25V and 0.22A or 3.2Watt which is the maximum rated copper loss

Dielectric Test:

TEST CONDITION: Apply dielectric meter between primary coils and secondary coils; and increase voltage up to 3500VAC. No initiate any spark.

Load Test Result:

TEST CONDITION: Input 115VAC 60Hz to the primary coil; parallel 2 secondary coils, 5 ohm 250W resistors as dummy load and room temperature at 25 degree C. Temperature rises 5 degree C after an hour test at load test #3.
1. Primary I = 0.01A, Secondary V = 12.0VAC at 0.0A, Power = 0 Watt
2. Primary I = 0.10A, Secondary V = 11.7VAC at 0.7A, Power = 10 Watt
3. Primary I = 0.21A, Secondary V = 11.0VAC at 1.8A, Power = 22 Watt

Dimension – 3.0” Diameter x 1.5” High.
Weight – 1.3 LB net.
Wire lead – 12” color-coded.

If you have more technical questions, please visit antekinc.com