AS-3224 300VA Audio Toroidal Transformers
The 300VA toroidal audio power transformers have static
shield between primary and secondary coils to improve
the isolation and noise interference. And they also have
the magnetic shield around the outside to reduce the
magnetic leakage. All the added features will make these
transformers to be the best audio transformers. They are
specially designed to work on all standard 115V or 230V
at 50Hz or 60Hz. These transformers have heavier gauge
wires then the normal requirement to avoid the copper lost
during the full power output. The dielectric leakage
current test is up to 3500Vac in between primary and
This transformer comes with 2 rubber pads, holding disk
and center bolt assembly.
5.0” / 4.75”
Weight = 7 LB
Open Circuit Test (core loss test):
TEST CONDITION: Apply variable voltage to primary coils (in
parallel). Set voltages 120 and 140VAC at 60Hz. No load on secondary
coils. Measure the primary current and input power.
Short Circuit Test (copper loss test):
TEST CONDITION: Short all secondary coils, and apply variable
voltage to (parallel) primary coils. Varies the voltage from 0-20VAC at
60Hz and freeze the voltage at rated primary current.
Dielectric Test (leakage current):
TEST CONDITION: Apply high voltage probe to primary coils and
check the leakage current to ground wire(purple) and secondary coils.
Load Test (operation test):
TEST CONDITION: Input 120VAC 60Hz to the primary coils (in
parallel), Output 1 and Output 2 in parallel to load, and measure voltage
and current at different load levels.
C Current to GN urrent to 2nd
25 Ewing Ave.
N. Arlington, NJ 07031