Hi, anyone know what's this item (HIT 215 0230J)? I can't find it online with the code given. May i know the output voltage of this? Is it AC or DC? Appreciate if someone can guide on this. TQ

 

It looks like a transformer to me. Probably an in-house item.

 

anyone know what's this item (HIT 215 0230J)? I can't find it online with the code given.

A component designator of T1 would imply that it's a transformer.

May i know the output voltage of this? Is it AC or DC? Appreciate if someone can guide on this.

Transformer inputs and outputs are AC. We can't tell what either are without more information. We know you don't know what the component is, but knowing what it's used in would be helpful.

 

It looks a lot like a power supply for a cold-cathode florescent backlight for a flat screen monitor of some kind. The cube shaped device is a transformer, the T1 designation relates only to the circuit diagram and the assembly bill of materials.

 

That's a backlight inverter giving out AC..probably 150 to 200V...

 

It looks a lot like a power supply for a cold-cathode florescent backlight for a flat screen monitor of some kind. The cube shaped device is a transformer, the T1 designation relates only to the circuit diagram and the assembly bill of materials.

Yes, indeed it's for backlight, but is this a florescent? No light out, so is it possible that I can inject voltage directly without go throught the circuit?

 

That's a backlight inverter giving out AC..probably 150 to 200V...

Yes, for backlight, I'm not sure if can direct inject 240VAC to the light or not?

 

Yes, for backlight, I'm not sure if can direct inject 240VAC to the light or not?

Powering any gas discharge device is complex because they exhibit negative resistance. That means that when the gas starts to conduct the voltage drops and the current rises a whole lot. Probably it is not the transformer that has failed, but rather one of the active devices.
So the answer is NO, you can not simply inject 240 volts AC and expect things to work. And much of the time it is the tube that has failed.

 

Powering any gas discharge device is complex because they exhibit negative resistance. That means that when the gas starts to conduct the voltage drops and the current rises a whole lot. Probably it is not the transformer that has failed, but rather one of the active devices.
So the answer is NO, you can not simply inject 240 volts AC and expect things to work. And much of the time it is the tube that has failed.

To confirm if there is output supply to the tube, can I measure the AC at this point (TP1 and TP2 near the Transformer output there)? Is the AC voltage always there as long as the supply to turn this tube ON? Or only it'll only have voltage for few second? Thanks

 

Powering any gas discharge device is complex because they exhibit negative resistance. That means that when the gas starts to conduct the voltage drops and the current rises a whole lot. Probably it is not the transformer that has failed, but rather one of the active devices.
So the answer is NO, you can not simply inject 240 volts AC and expect things to work. And much of the time it is the tube that has failed.

To confirm if there is output supply to the tube, can I measure the AC at this point (TP1 and TP2 near the Transformer output there)? Is the AC voltage always there as long as the supply to turn this tube ON? Or only it'll only have voltage for few second? Thanks

 

To confirm if there is output supply to the tube, can I measure the AC at this point (TP1 and TP2 near the Transformer output there)? Is the AC voltage always there as long as the supply to turn this tube ON? Or only it'll only have voltage for few second? Thanks

The voltage is maintained as long as the tube is supposed to be illuminated. It drops to a lower value when the tube lights, but that is still well above zero.