Video Accessory Corp VB/12V
Power Ground Isolator

Most of VAC’s distribution amplifiers take advantage of the properties of individual floating (ungrounded) power sources (AC adapters) to provide some inherent ground loop and interference protection.

By using a floating power source, the VAC distribution amplifier does not provide a direct path to the power line ground and so does not introduce a ground loop as is the case with traditional distribution amplifiers. The use of individual floating power sources also precludes the possibility of loop currents between distribution amplifiers causing power supply interference.

An additional advantage is that the use of individual floating power sources eliminates power supply paths that allow different signals to interfere with each other through cross-talk between distribution amplifiers.

For the reasons noted above we highly recommend that the AC adapters included with most of our distribution amplifiers be used to provide power individually to those distribution amplifiers.

Certain VAC products require an ungrounded power source for proper operation. In some instances, it is desirable to operate these units from a negative ground 12 VDC power source. The VB/12V is intended to meet that need for the current versions of the YCVB/VDA, VDA-640 and HN/VDA. Use with other current VAC products is not recommended.

Output Voltages +/- VDC nominally measured with respect to input ground. Both voltages decrease with load such that at 100 mA load, the output voltages are approximately +/-6 .8 VDC

Max Output Current 100 mA up to 18 VDC input; 90 mA at 24 VDC input; 75 mA at 28 VDC input. Excessive output current will result in thermal shutdown

Power Requirements 12-28 VDC negative ground, <500 mA

Dimensions 0.6"D x 0.55"W x 1.8"L (excluding connectors)

Shipping Weight 1 lbs