Brewster, Richard
35 records
JVC VTR Manual Gain Override and Meter Driver Schematic Sheet Bibliography
JVC VTR Manual Gain Override and Meter Driver Schematic Sheet. Hand Drawn.
Paik-Abe Video Synthesizer Documentation, Brewster D+7A Extension, MC 1372 Color Video Monitor Circuit, Basic 5, Cherry Keyboard Bibliography
Paik-Abe Video Synthesizer Documentation, Brewster D+7A Extension, MC 1372 Color Video Monitor Circuit, Basic 5, Cherry Keyboard. Handwritten and printed schematics and panel diagrams follow: Encoder (conductor side), Encoder (schematics), top panel drawing, front panel inputs and controls, Mixer-Fa…
Paik/Abe Colorizer - Experimental Television Center Studio System Manual Tools
The Paik/Abe Colorizer is a manual video mixer combining up to seven video signals into the three inputs of a color encoder and routing the output through an amplifier; channel controls include gain pots, on/off switches, color selectors and pan pots. Selector positions include Red, Green, Blue, R-G, R-B and G-B; the unit performs additive mixing, is sensitive to input gain (producing key-like or negative effects), has no built-in voltage control inputs (external video VCAs and voltage-controlled processors can be used). Photographs by Evangelos Dousmanis and Pamela Hawkins document Charlotte Moorman, Shuya Abe (1971), an early Paik/Abe Colorizer and Nam June Paik at Bonino Gallery.
Raster Manipulation Unit: Operation and Construction Tools
Raster Manipulation Unit: Operation and Construction (1980) documents a prepared-television modification that adds extra yokes to a conventional black-and-white CRT and drives them with audio or function generators; the technique permits raster reversal, raster collapse to a line or point, S-curve distortions and other deformations, and uses optical rescanning to record the effects. System configuration lists a modified receiver/monitor with raster reversal and collapse functions, one stereo and one mono amplifier and three audio generators; added yokes include a color yoke and a continuous-wind (S-curve) yoke. Signal examples include sine, square and triangle waveforms, Lissajous patterns and frequency guidelines; Nam June Paik is cited as having popularized the modifications.
Special Effects Generator - excerpt from the Experimental Television Center Studio System Manual Tools
Excerpt from the Experimental Television Center Studio System Manual describing the Panasonic Special Effects Generator (SEG), a multi-input processor that combines two inputs via mixing, wiping, internal and external keying. The manual documents routing and controls: three main inputs plus an external key at the matrix split to buses A, B and preview; transitions Mix, Wipe, Int and Ext; bar, SUP and Cut functions; inputs 5, 6 and 4 assigned to color bars, black and genlock; outputs to the matrix and patch panel and uses including sending color bars to monitors/VTR, using a color monitor as preview, bypassing the Jones output amp.
System I, General Schematics Bibliography
System I, General Schematics. Sync Distribution: Pulse Distribution and Subcarrier Distribution (09.78). Sync Panel on Back of Rack, Sync System Diagram (block diagram), and list of work involved. Detail of Sync Distribution Amplifier. Main System Sync Distribution. Output Amplifier. Jones Output Am…
System I, Keyers and Voltage Controlled Amplifiers (VCA's) Bibliography
System I, Keyers and Voltage Controlled Amplifiers (VCA's). Correspondance to the Experimental Television Center from Dave Jones. 1/2 Scale Keyer/ VCA Panel. Keyer Input Selection (VCA) (08.1978). VCA Module (add these circuits for a complete module, 3 circuits) (08.78). Sync Adding, Output Bufferin…
System I, Sequencer Bibliography
System I, Sequencer. Control for Sequencer. Video Sequencer (09.1978). Input & Control and Output. Sequencer Connector list. Experimental Television Center Analog Synthesizer (full scale template) (pp. 1 & 2 of 3, 06.78 & 02.78, originals plus one set of copies).
System II Bibliography
System II. Schematic diagram. Oscillator Board Component Side (08.1985). Oscillator Component Side (continued) and Parts List and Count. Experimental Television Center Studio Notes (06.27- year unknown). Keyer Trimpots. Tweeking the Jones (ETC Studio Notes). Jones Colorizer: Control Panel- Connector…
Voltage Control and the Analog Synthesizer - from Experimental Television Center Studio System Manual Tools
Experimental Television Center's Analog Synthesizer is a modular system producing control voltages and synthesized audio; outputs conform to a -5V to +5V standard (10V peak-to-peak) and the unit is compatible with commercial audio synthesis equipment. The studio manual documents two boxes of modules and their controls and jacks — negative and positive ramps, triangle, waveshape shaper, inverter, random, one-shot and pulse, comparators, mixers, dual VCAs, VCFs and a VCO — with operating ranges, VC/gain/bias/Q functions and typical patching techniques. The text includes signal classifications (bias, function, waveshape) and suggested patches for oscillation, gating, sampling, panning and filtering.