Moog Patents circuit | Next Electronics

The streamliner passenger car was introduced just before World War II as part of dedicated passenger car and locomotive sets. These cars were designed to be lightweight, enabling high speeds with a relatively small diesel engine. Over time, railroads integrated...

synth diy

Some components for the equalizer (EQ) are mounted on the potentiometers. The only modifications made to the circuit from the previously posted schematic include the addition of a feedback loop from the line output to the switched side of the...

Shruthi-1 Sound Filter

The Shruthi-1 is an impressive hardware synthesizer equipped with the highly regarded SMR-4 MkII filter board. Developed about a month ago, it has become a favorite tool for sound exploration. As a sound designer, there is a continuous drive to...

Four channel synthesizer

This circuit synthesizes two rear channels for quadraphonic sound when provided with a stereo signal. The rear output for the left channel is created by combining the left channel input, which is 180 degrees out of phase, with a portion...

synth tr909

This PCB design was inspired by Colin Fraser, who discovered valuable enhancements to the bass drum circuit of the Roland TR909. The project by Trevor Page, known as the 9090 project, also provided significant assistance. As an enhancement to these...

Qualitative Analysis of Analog Circuits

At the beginning of the design process, the designer must determine which circuit structure is appropriate for a specific purpose. During this phase, numerical and symbolic analysis are of limited utility. There are no numerical values available for conventional simulations...

DIODE-SWITCHED SYNTHESISER

The MC145152-2 synthesizer can be programmed using DIP switches, a diode matrix, or EPROM look-up tables. However, it is now difficult to find, costing around US$30. Modern synthesizers require PIC processors for programming or must remain connected to a computer....

Electronic Music Maker

This electronic music maker utilizes an astable oscillator circuit that is regulated by a photocell. The intensity of light falling on the photocell influences the tone. By enclosing the circuit within a box, it is possible to manipulate the light-sensing...