What's New at Voltex
Over the past 15 years, we at Voltex have made and shipped many thousands of our "A" model, a 1.3 cubic inch (21 CC) cylindrical power supply to operate the smaller, 1/2 and 1 mW lasers from a DC input, such as from batteries. It is 7/8" dia. (22 mm) X 2 - 1/8" L (54 mm).
In year 2000, we re-designed this unit to make use of recent technology, such as surface mount. This unit now has very tight current regulation, full start voltage regulation, more start voltage, and less output current ripple (noise). Output current is now kept within +/- 1% through the ranges of line and load. Start voltage is now typically 8 KV and output ripple is now less than 10% P - P. We are very pleased with this unit indeed.
We have also added the TH-28, a version of the D-28 which accepts 115 or 230 VAC and will drive a load of 3600 V and 10 mA.