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Passive subwoofer filter
The schematic shown, does no need any power supply because is a simple low frequency passive filter. It could be usefull if you want to drive an extra subwoofer...
Passive subwoofer filter
The schematic shown, does no need any power supply because is a simple low frequency passive filter. It could be usefull if you want to drive an extra subwoofer...
TONE DISPLAY – Circuit Schematic
TONE DISPLAY
The heart of the circuit is the tone (pitch) display section, based on the popular LM3914 display driver. This device drives ten LEDs in a linear display, with ...
TONE DISPLAY – Circuit Schematic
TONE DISPLAY
The heart of the circuit is the tone (pitch) display section, based on the popular LM3914 display driver. This device drives ten LEDs in a linear display, with ...
Cuckoo-song Generator – Circuit Schematic
Cuckoo-song Generator
Agreeable, very close sound imitation Suitable for sound effects, door-bells etc. This circuit generates a two-tone effect very much alike the cuckoo song. It ...
Cuckoo-song Generator – Circuit Schematic
Cuckoo-song Generator
Agreeable, very close sound imitation Suitable for sound effects, door-bells etc. This circuit generates a two-tone effect very much alike the cuckoo song. It ...
Bells ring Generator – Circuit Schematic
Bells ring Generator
Three circuit options Can be synchronized to Christmas tree flashing lights This circuit generates a dual-tone bells ringing similar to most door-bell units. I...
Bells ring Generator – Circuit Schematic
Bells ring Generator
Three circuit options Can be synchronized to Christmas tree flashing lights This circuit generates a dual-tone bells ringing similar to most door-bell units. I...
Simple Surround Sound Decoder – Circuit Schematic
Simple Surround Sound Decoder
This surround-sound decoder is based on the "Hafler" principle, first discovered by David Hafler sometime in the early 1970s. The original idea was to connect a...
Simple Surround Sound Decoder – Circuit Schematic
Simple Surround Sound Decoder
This surround-sound decoder is based on the "Hafler" principle, first discovered by David Hafler sometime in the early 1970s. The original idea was to connect a...
Simple Surround Processor – Circuit Schematic
Simple Surround Processor
This is a simple Surround Processor with the degital delay method. This audio processor is not using any special function ICs that difficult to get parsonaly, a...
Simple Surround Processor – Circuit Schematic
Simple Surround Processor
This is a simple Surround Processor with the degital delay method. This audio processor is not using any special function ICs that difficult to get parsonaly, a...
S/PDIF Digital to Analogue Converter – Circuit Schematic
S/PDIF Digital to Analogue Converter
S/PDIF is an acronym for Sony /Philips Digital Interface (or Sony /Philips Digital Interconnect Format). The full specification for the S/PDIF interface consist...
S/PDIF Digital to Analogue Converter – Circuit Schematic
S/PDIF Digital to Analogue Converter
S/PDIF is an acronym for Sony /Philips Digital Interface (or Sony /Philips Digital Interconnect Format). The full specification for the S/PDIF interface consist...
Digital Guitar Tuner – Circuit Schematic
Digital Guitar Tuner
The circuit is a simple, but accurate Digital Guitar Tuner. It samples the input, which can be directly from the mics of an electric guitar, or from a microphon...
Digital Guitar Tuner – Circuit Schematic
Digital Guitar Tuner
The circuit is a simple, but accurate Digital Guitar Tuner. It samples the input, which can be directly from the mics of an electric guitar, or from a microphon...
Digital Delay Unit For Surround Sound – Circuit Schematic
Digital Delay Unit For Surround Sound
The digital delay presented here is expected to be sufficient for most applications, and although the delay is fixed at 20ms, this is the most usable delay peri...
Digital Delay Unit For Surround Sound – Circuit Schematic
Digital Delay Unit For Surround Sound
The digital delay presented here is expected to be sufficient for most applications, and although the delay is fixed at 20ms, this is the most usable delay peri...
Digital Volume Control – Circuit Schematic
Digital Volume Control
This digital volume control has no pot to wear out and introduces almost no noise in the circuit. Instead, the volume is controlled by pressing UP and DOWN butt...
Digital Volume Control – Circuit Schematic
Digital Volume Control
This digital volume control has no pot to wear out and introduces almost no noise in the circuit. Instead, the volume is controlled by pressing UP and DOWN butt...