Toppobrillo - Dual Function Generator

The PCB is 76mm by 107mm. This Toppobrillo PCB is a dual function generator. Two AD envelopes with extensive CV control. It can run on both +/-15v or +/-12v (with some resistor changes noted in documentation). The Original Buchla 281 Module is made up of 4 independent Function Generators, A,B,C and D- with A&B and C&D tied together in the bottom section functions, quadrature and ors [peak]. The 281 Clone PCB is actually half of a 281, and can be used alone or in conjunction with other boards. The 281 Function Generator…Operates like most envelope generators, it’s operation is as follows: An appropriate signal at the trigger input causes the generator to ramp upwards from 0 to 10V at a rate set by the “attack” control and input. Depending on operation mode, once it reaches 10V, it is either held steady by a gate signal, pending release, or enters the decay phase instantly [depending on operation mode] and then ramps downward towards 0V at a rate specified by the setting of the