Archive for July, 2019:

2019-07-09 My Telecom/datacomm Background

from FB group Bell Telephone of… Jul 09 Jon Guidry (new member) I was a telecomm/datacomm tech for Santa Ana College and the rest of the college district, so we were a customer of Pac Bell/SBC/at&t. I did all house Telecom and datacomm wiring and plant for 3+ decades. I was a craftsperson like many

(Read More…)

2019-07-08 BigClive Fixes LED Floodlight With Solder

from YouTube video bigclivedotcom about fixing a LED floodlight. Half of the 100 LEDs went dark; he resoldered the LEDs and they all started working. The non-conducting half was not using its half of the 25 mA, so the conducting half was probably running at nearly twice its normal current, or about 25 mA. Hopefully

(Read More…)

2019-07-06 Earliest Audio Amplifiers I built

from FB group Building Transistor Radios July 6 Bill Korbak The early germanium alloy transistors didn’t have enough bandwidth for RF, they were only good for audio. That’s where I built my first amplifier, a three transistor audio amp on a PC board I etched in ferric chloride. I also built the power amplifier. It

(Read More…)

© RustyBolt.Info/wordpress