TTSH - Mixer, Reverb, Noise and Voltage Processors Done TTSH
Earlier already I finished the mixer and reverb section:
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TTSH - Preamplifier, Envelope Follower and Ring Modulator Done TTSH
Yesterday I have also finished the section with preamplifier, envelope follower and ring modulator:
TTSH - VCA Done TTSH
The next section I've done is the VCA:
TTSH - ADSR and AR Done and Tested TTSH
Next to the VCF section is the ADSR and AR section, which I've finished now, too:
TTSH - VCOs and VCF Done and Tested TTSH
Now that I have all components available, I was able to build up the three VCOs, attaching the small boards with the according connectors to the main board:
TTSH - The Story Continues - All Components Available TTSH
More than one month has passed, but finally I have managed to get all the required components. I was still missing the 2N4125 transistors for the small VCO boards and 4 ceramic capacitors of 5pF. As replacement for latter I got some 5.1pF capacitors through some relatives in the …
TTSH - The Thonk and Balzer Deliveries TTSH
TTSH - Matching Transistors TTSH
At Mod Wiggler I've found some hints and a circuit for transistor matching. I've built that circuit on stripboard and now can start with the transistor matching: The TTSH design uses various pairs of 2N3904 and 2N3906 transistors. These pairs should each have a very similar base-emitter voltage (within 2 mV difference).
TTSH - Let the TTSH Soldering Begin TTSH
Many components are available now, a few remaining that are still missing should arrive soon. It's about time to start soldering. Before doing so, I have sorted all resistors and capacitors: