New transformers tested and working

A project log for Dalek / Cybermen voice changer

A simple ring-modulator circuit which can change your voice to sound like a Dalek or Cybermen from Doctor Who

sproketSproket 12/16/2020 at 11:590 Comments

The 1:1 +C.T. transformers (Vigortronix VTX-101-1604) have arrived and seem to work well once soldered to some strip-board. Powering this board using the existing microphone amplifier and an external sine-wave source gives the desired result. It seems as though a buffer amplifier is required on the output due to signal drop through the ring modulator. Can always use that as a volume control for the speaker output. Nearly there, just being held back by another project deadline.

1:1 Ring Modulator on strip board
1:1 Ring Modulator on strip board