Burn-in test apparatus with function of energy recycling
A new electrical recycling apparatus for AC/DC power converter is provided to recycle the electricity in direct current to the input ends of the power converter to be tested to save a stage of power converter and avoid the complicated standard and requirement that feed the electricity to the mains supply.
1. A burn-in test apparatus with the function of energy recycling, comprising:
an AC/DC power converter with an input end connected to an AC power source and an output end providing a first DC voltage;
a testing block with an input side and an output side for mounting a power converter to be tested, wherein the input side of the testing block is connected to the output end of the AC/DC power converter and powered by the first DC voltage provided therefrom;
an active electrical load with an input end and an output end, wherein the input end thereof connects to the output side of the testing block to simulate an electrical load for the power converter to be tested, thereby the active electrical load allows the power converter to be tested to output a constant current, so as to allow the output end of the active electrical load to output a direct current; and
an energy recycle line connecting the output end of the active electrical load with the input side of the testing block to transmit the direct current from the output end of the active electrical load back to the input side of the testing block.
2. The burn-in test apparatus of claim 1 , wherein the AC/DC power converter is a full-bridge rectifier.
3. The burn-in test apparatus of claim 1 , wherein at least two power converters to be test are mounted to the testing block, and each power converter has an input end and an output end.
4. The burn-in test apparatus of claim 3 , wherein the input ends of the power converters to be tested are connected in parallel.
5. The burn-in test apparatus of claim 3 , wherein the input ends of the power converters to be tested are connected in series.
6. The burn-in test apparatus of claim 3 , wherein the output ends of the power converters to be tested are connected in parallel.
7. The burn-in test apparatus of claim 3 , wherein the output ends of the power converters to be tested are connected in series.
8. The burn-in test apparatus of claim 1 , wherein the active electrical load further comprises a boosting transformer in an inner circuit thereof.
9. The burn-in test apparatus of claim 8 , wherein circuit of the active electrical load further comprises a RCD type snubber connected with the boosting transformer in parallel in the inner circuit thereof, wherein the RCD type snubber comprises a resistor, a capacitor and a diode.
10. The burn-in test apparatus of claim 9 , wherein a diode is connected in series with a unity of the capacitor and the resistor connected in parallel.
11. The burn-in test apparatus of claim 9 , wherein the circuit of the active electrical load further comprises an enhancement mode metal oxide semiconductor field effect transistor in the inner circuit thereof.
12. The burn-in test apparatus of claim 11 , wherein the circuit of the active electrical load further comprises an diode connected to both ends of the enhancement mode metal oxide semiconductor field effect transistor.
13. The burn-in test apparatus of claim 11 , wherein a unity of the RCD type snubber and the boosting transformer is connected with the enhancement mode metal oxide semiconductor field effect transistor in parallel.