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=Dial Lights After Warm-Up=
=Dial Lights After Warm-Up=
The 30S-1 amplifier was designed with a 3-min delay before allowing High Voltage on the tube - the Eimac datasheet specifies at least this long. Mine is closer to 2-1/2 minutes, so I must pause before pushing the "ON" button. Here is a 10-second video clip showing the dial-lights illuminating, after the Amperite Thermal Time-Delay heats up:
The 30S-1 amplifier was designed with a 3-min delay before allowing High Voltage on the tube - the Eimac datasheet specifies at least this long. Mine is closer to 2-1/2 minutes, so I must pause before pushing the "ON" button. To let me know when this time-delay has completed, I re-wired my dial-lights to the DC circuit which is down-wind of the thermal delay-timer:
* remove the hot lead from lamp socket DS201
* Add a new lead from DS201 to the white-red-orange-green wire at the rear of the HV "OFF" switch, S208 (either contact)

Here is a 10-second video clip showing the dial-lights illuminating, after the time-delay:


[[Media:Dial_lights_after_warmup.mp4|Video showing Dial Lights after Warm-Up]]
[[Media:Dial_lights_after_warmup.mp4|Video showing Dial Lights after Warm-Up]]

Revision as of 13:48, 26 May 2020

Dayton Blower Sound Level

Here are a couple of sound-measurements, for context. I used the NIOSH iOS app:

  • 30S-1 with Dayton 3,000rpm motor change: 59 dB(A) 1-meter directly in front
  • Listening to HF Radio, SSB voice: 65 dB(A) for my preferred Sound Level
  • My living-room is a blissful 36 dB(A)

Video showing Dayton Blower Start-up Sound

Dial Lights After Warm-Up

The 30S-1 amplifier was designed with a 3-min delay before allowing High Voltage on the tube - the Eimac datasheet specifies at least this long. Mine is closer to 2-1/2 minutes, so I must pause before pushing the "ON" button. To let me know when this time-delay has completed, I re-wired my dial-lights to the DC circuit which is down-wind of the thermal delay-timer:

  • remove the hot lead from lamp socket DS201
  • Add a new lead from DS201 to the white-red-orange-green wire at the rear of the HV "OFF" switch, S208 (either contact)

Here is a 10-second video clip showing the dial-lights illuminating, after the time-delay:

Video showing Dial Lights after Warm-Up