Fuzzbass ‘TTSH Gate Booster’ PCB
The Arp 2600 and the TTSH are a little fussy about timing signals. You can trigger the envelopes with signals of around 5V but you won’t fully open the envelopes unless you provide a gate signal minimum 10V. The ADSR circuit has a retrigger function (unlike Minimoog) that allows you to reset/restart the cycle when you press a second key, or trill. This is a significant performance difference, but you cannot use the gate signal to do it. The 2600/TTSH require a separate trigger signal to reset the ADSR.
Working with other wiggglers, and copying stuff from masters like Ken Stone and Ray Wilson, Fuzzbass came up with a simple circuit that will accept a common gate signal, minimum 2.7V, and reproduce it somewhere north of 10V. In the process, a trigger signal of 10V is also produced, and which represent the leading edge of the gate signal. The trigger is a very short pulse, less than 1Msec. These have individually buffered outputs, so they can be spread around. There is also an allowance for an LED to show gate output status. The circuit is powered with +/- 15VDC and demand something trivial like 16MA on the +15V rail and almost nothing on the negative rail.
The PCB dimensions are 50mm square
For BOM and build info read more here
Schematic – TTSH_GATES_Schem