09-26-2022, 09:37 PM
hi keefer,
i still have a lot to learn myself. in particular how the pins are numbered.
the pin at 12:00 in your picture is the grounded pin. notice the metal strap connected to a rivet. 3:00 and 6:00 are the ones you connect to contacts TA and TB. the 2 tan wires in the picture connect those pins to the transformer. the pin at 9:00 is 6 volts negative, which is not needed for the aurora design vibrator. on the schematic, the 9:00 pin connects to a coil [no.57], a 0.5uf cap [no.58] and the heater of the rectifier tube [the 84] but not to a transformer.
i like to solder the aurora circuit board to a 4-pin vibrator base [with short wires]. that way, you can plug it in or remove it from the radio easily.
i'm curious to learn if the radio works on its side with the aurora vibrator.
bob
i still have a lot to learn myself. in particular how the pins are numbered.
the pin at 12:00 in your picture is the grounded pin. notice the metal strap connected to a rivet. 3:00 and 6:00 are the ones you connect to contacts TA and TB. the 2 tan wires in the picture connect those pins to the transformer. the pin at 9:00 is 6 volts negative, which is not needed for the aurora design vibrator. on the schematic, the 9:00 pin connects to a coil [no.57], a 0.5uf cap [no.58] and the heater of the rectifier tube [the 84] but not to a transformer.
i like to solder the aurora circuit board to a 4-pin vibrator base [with short wires]. that way, you can plug it in or remove it from the radio easily.
i'm curious to learn if the radio works on its side with the aurora vibrator.
bob
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
