Categories

Posts Tagged ‘DC power supply’

Glowing mercury thyratrons: Inside a 1940s Teletype switching power supply

Monday, September 24th, 2018

Ken Shirriff take a look inside a bulky DC power supply REC-30 rectifier, how it works and contrast it with a MacBook power supply: We recently started restoring a Teletype Model 19, a Navy communication system introduced in the 1940s.14 This Teletype was powered by a bulky DC power supply...

Tags: ,
Posted in power supply, Teardowns | No Comments »

Recent Comments

  • ConnyCola: When will the page go online? I would love to see more of the new service!
  • Edward Mallon: Dr. Beddow's instrumentation class has been building the 2016 version of the Cave Pearl datalogger for more than three years, and feedback from that experience...
  • Neal: Loose no more.
  • Crawford: Must try to win...
  • readybrek: If you like a lot of chocolate on your biscuit join our club!