***SONICA 1 - Headphone Amplifier with TPA6120***
Sonica 1 is a rebirth of an older design of mine. A few years back I designed a small PCB for a headphone amplifier, based on BurrBrown (TI)TPA6120A2 chip amplifier. I made a power supply on a piece of test PCB with a toroidal transformer. The end result was quite pleasing and I have used it since then as my main source for music at home, whenever...
THIS IS AN SMD LM386 CIRCUIT. IT CAN BE USED LIKE A WALKIE TALKIE BUT WITH A MUCH MORE CLEAR SOUND.CONNECT A ELECTRET CONDENSOR MICTO THE "IN" PIN AND "GND" AND FIX A SPEAKER TO THE OUTPUT END.(IF U WANT, CONNECT A LONG WIRE TO THE MIC OR SPEAKER) AND SPEAK THROUGH THE MIC.ITS A REAL FUN AND CHEAP CIRCUIT TO PLAY WITH.
Amplifier stereo 80 watt (2x40) dengan power supply 12 volt. dengan speaker 4 ohm.
- pin 1 dan 13 dari TDA8560Q adaah input sinyal audio. kapasitor 474 bertugas melindungi input dari arus DC yang masuk.
- pin 3 dan 10 adalah supply tegangan. jika tegangan lebih dari 18 volt maka sirkuit tidak ON.
- pin 11...
**This is an experimental electronic circuit, without any warranty.**
Class-A Mosfet Headphone Amplifier
This is a 12V Tube Amplifier with a built in USB DAC.
The amplifier part is based on Rogers Gomez's [NP-100v12](https://diyaudioprojects.com/Solid/12AU7-IRF510-LM317-Headamp/) design.
The USB DAC is inspired by Jan-Erik Skata's [JEDAC](http://users.abo.fi/jskata/JEDAC/) design.
This is a Work-In-Progress, untested and provided as-is until further notice.
Holes might be in the wrong p...
I changed some components as oposed to original design to get better filtering, better cut off frequencies of low and high pass filters. Better Zobel network.
Ver 1.2 Update: Better quality components placed on PCB. Added star ground plate. Replaced one 22k resistor with 21k for better input bias current control. Replaced spade connectors with quality screw type connectors. Added two 2.5A fuses....
EasyEDA project for easy and quick build "Coax power supply, fixed voltage" module used for powering up active antennas and amplifiers through a coaxial cable. Project includes schematic and PCB prepared for setting up into aluminum enclosure with dimensions 80 x 50 x 20 mm with SMA connectors. Version for mounting SMD components.
## Current development progress:
Simple push-pull configuration of two PCL84 TriodePentodes.
All resistors are 0,25W.
PowerSupply is simplified by using simple 230V-12V transformers.
Output transformer is an ordinary 230V-12V transformer as well.
Isolation tranformer is a cheap miniature chinese 1:1 audio isolation transformer (red tape on winding and white tape on core), take note of its phase orientation.
Gain is set by R13 fe...