Data Video TBC-1000. 12v 1.2amps input or 12v 1.0amps?

[cameronhamill]

Hi Members,

Does anyone know what is correct? I received a TBC-1000 a few days ago. The AC/DC power adapter supplied is 12v 1.2 amps. The power input on the actual TBC unit also has printed on it 12v 1.2amp input.

The manual states that it's 12v 1.0 amps as does all of their website specs for the unit.

Which is correct?

12v 1.2a OR 12v 1.0a input?

[MOVIEGEEK]

1.2 amps, always go with what's listed on electronics. The manufacturer probably increased the amperage because 1 amp wasn't enough to keep up with demand. Amps are not as important as voltage, for instance you can use a higher amp power supply but never use a higher voltage.

[cameronhamill]

Thanks very much MOVIEGEEK. I will go with the 12v 1.2amps as printed on the unit. Just wanted to be careful before using it.

Thanks again.

[nic2k4]

Amps are not as important as voltage, for instance you can use a higher amp power supply but never use a higher voltage.

This only holds if the power supply is regulated. An unregulated 12V power supply will output as much as 18V with no load, when a sufficient load is applied the voltage will go down to 12V (a circuit's load is rated in Amps). The higher the Amp rating of a power supply the higher the load required to get the rated voltage.

When the Amp rating of a power supply is lower than what's required by the load, the voltage will be reduced (to the point that the device won't turn on).

Sometime the load is rated in VA or Watt, you are then supposed to do the calculation to figure out the actual output voltage of the supply/load combination.

All switching power supplies are regulated and all regulated power supplies will say so on the label.

[cameronhamill]

Thanks for your further details nic.

I live in Australia so we are on the 240volt 50Hz system.

I have bought a regulated AC/DC power adapter 12volts 1.2amps. I don't know if these adapters change the Hz or not.

But I suppose if they don't I will be feeding the unit

12v 1.2a
Regulated
But 50Hz (not the USA standard of 60Hz).

I wonder if the unit will be able to take 50Hz? I've asked DataVideo some questions on their FaceBook page but I haven't heard back yet. I only posted my question to then yesterday.

[nic2k4]

Doesn't matter what the AC source is once it's converted to DC (DC is 0Hz if you like). Most of the switching regulator can automatically adjust to the AC source; check the label, it should list 240V/120V for the input.

[loster]

Input frequency to the power supply can matter as well. Not as much with modern switching regulators, but it is a factor to keep in mind. And for future reference the input voltage for a switching power supply typically rages from 100-240 Volts.