140

The Buchla 100 series' timing pulse generator (1960s), drawn in its Buchla Associates panel: the pulse source the 100 series catalogue names for stepping the 123 sequencer. Its PERIOD sets the time between pulses from .005 to 20 seconds, its PULSE LENGTH each pulse's length as a percentage of the period, each by its knob or by the voltage at its black input as its ext / int switch chooses. A MODE knob (start-stop, single pulse, repetitive), a single pulse button, start and stop inputs, and four outputs: two alternate, two of all the pulses.

Key features

• Pulses from .005 to 20 seconds apart
• Pulse length as a percentage of the period
• Start-stop, single pulse and repetitive modes
• Alternate and all-pulse outputs