Flyback Transformer-How to Locate the ABL Line
Flyback Transformer-How to Locate the ABL Line
Whenever there is a complaint about monitor contrast problem I will check on the flyback transformer ABL (automatic blanking limiter) circuit. Sometimes a weak picture tube might caused contrast problem. If the picture tube is good, I will go stra…
Laser Printers
Laser Printers
The ‘Model 3800’ by IBM was the first laser printer, introduced in 1975. Very soon, the ‘ND 2 by Siemens and the ‘9700’ by Xerox also came out. The technology of laser printers was revolutionized by the introduction of the LaserJet in 1984, by HP. After that, the price…
RFID Readers
RFID Readers
RFID is an acronym that stands for “radio frequency identification.” It is a continuously evolving technology that fundamentally is an automatic identification system that facilitates detection of objects. Purchases will be made easier when bar codes are replaced by RFID tags, a…