Electronics Projects, 5+1 Home Theater System SADC Preamplifier Circuit article
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Quality hi-fi quality 5.1-transistor preamplifier circuit design have given all the details of a list of materials, box dimensions, PCDs, drawings, sound dB details, measurements, notes etc.. BF245C circuit, 2N3019 (2N1711 can be used instead) transistors based on a single source of supply voltage 60V DC. We also applied on the source site has a lot of projects in the preamp amp lamp
Preamplifier SADC Circuit
The six-channel preamplifier that we present is designed to drive a HI-FI system with five or six channels. You will appreciate the essence of the new SACD or simply to give a boost to your Home Cinema””. It will fit in your system if your drive does not have volume control. This project is the first part of a project with a unitary set of 5-way power tube which will be presented in our subsequent editions.
The power supply uses the same pattern as that of our achievements tubes. It has proved its worth, why deny it? An AC voltage of 30 VAC, the voltage doubler applied on C81, C82 provides a voltage Us of 83 Vdc. The transistor T80 ( BC556 ) is mounted as a current source. The 10 Vdc voltage present across R82 (10 kOhms) induces a current of 1 mA and in P80 & R81 developed across it a voltage of about 64 VDC. –
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