Audio Mixer Schematics

  1. Stereo Mixer - Stereo Line Out
  2. Simple two line output combiner
  3. Mini Mixer
  4. 2-Input Audio Mixer
  5. 3 Line Mixer
  6. 6 Input Mixer
  7. 6-channel Mixer and Amplifier
  8. Simple Mixer
  9. Audio Mixer
  10. Stereo Mixer With LM353
  11. FET Audio Mixer
  12. High Quality Audio Mixer
  13. Portable Mixer
  14. Simple line mixer
  15. Microphone Mixer
  16. Audio Voice-Over Circuit


Last Update - September 2009

Fiber Optics Schematic

  1. Simple Circuit Uses Optical Fiber To Send Relative-Humidity Data
  2. Point-to-Point Fiber Optic Links (PDF)
  3. Simple CATV Upstream Fiber-Optic Receiver - Upstream fiber links in a community antenna television (CATV) system.
  4. A Thermoelectric Cooler Temperature Controller for Fiber Optic Lasers
  5. Current Sources for Fiber Optic Lasers

7-Segment LED Schematic

  1. SPI Interface Big 7-Seg LED - circuit uses a serial-in-parallel out shift register.

AC to DC Schematic

  1. Classic Plus and Minus DC Power Supply - produces both a positive 15v and a negative 15v from a 20vac wall adapter.
  2. AC to DC Boost Converter with PFC - Implementation of a AC to DC Boost Converter with power factor correction.
  3. Classic Linear 5v Supply Using 6.3vac Transformer - Circuit consists of an iron core transformer, a bridge rectifier, a filter capacitor and a voltage regulator.
  4. AC-to-DC converter circuit utilizing IGBT's - AC-to-DC converter furnishing a regulated DC-output voltage from an AC-input supply voltage
  5. Non-isolated Off-line AC to DC Power Supply - Efficient circuit can provide up to 100ma of a regulated 5 volts from an AC power.

Metal Detector Schematic

  1. Simple Metal Detector - Theory and schematic provided by HobbyHour
  2. Balance Metal Detector - Each coil modifies the frequency of the adjacent oscillator through mutual coupling
  3. Metal Detector - low price and compatibility practically with any proper construction sensor without tuning
  4. Simple Metal Detector - Used one 40106 hex Schmitt inverter IC, a capacitor and a search coil
  5. Metal Detector-1 - A fun metal detector to find coins at the beach
  6. One Coil Induction Metal Detector - Offered induction type metal detector is all-purpose
  7. Coil Coupled Operation Metal Detector - made from readily obtainable component

Ultrasonic

  1. Ultrasonic Transmitter - This is the schematics for an Ultrasonic Transmitter which will send a signal out into it's surrounding area.
  2. Ultrasonic Receiver - The photo depicts the schematics for an Ultrasonic Receiver which will detect the signal from the Ultrasonic Transmitter once it bounces off from an object.
  3. A Cheap Ultrasonic Range Finder - Here we use an ultrasonic piezzo transmitter with its receiver, they are very efficient, easy to find and quite cheap.
  4. Ultrasonic Range & Imager - This is the electronic schematic of the homebuilt Sonar.

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