Audio

Description: A variable notch filter with both high and low pass filters. Notes At first glance this circuit looks fairly complex, but when broken down,can be divided into high pass and low pass filter sections followed by a summing amplifier with

Posted at 08-11-30 by Admin views(7876)

Description: An amplifier to drive low to medium impedance headphones built using discrete components. Notes: Both halves of the circuit are identical. Both inputs have a dc path to ground via the input 47k control which should be a dual log type p

Posted at 08-11-30 by Admin views(4611)

Block Diagram: Here, it is a diagramm of an active loudspeaker. The LF353 of, National Semiconductor, is going to split audio signal into three bands. SANYO'S LA47536 is going to amplify these signals. In stereo mode, we shall have the action of eigh

Posted at 08-11-30 by Admin views(8190)

Description: Built around an LM380, this amplifier includes tone controls and electronic soft switching. The soft switching circuitry ensures power is built up gradually eliminating the dc thump. Notes: The soft switching is enabled by a BD131 trans

Posted at 08-11-30 by Admin views(5074)

Here is a simple and cheap amp to make I could have made the circuit board smaller but what the heck Here is a suggested circuit for the power supply. Please note: I have been getting some e-mail's from people with problems to discover that there

Posted at 08-11-30 by Admin views(5027)

Description: A microphone amplifier that may be used with either Electret Condenser Microphone (ECM) inserts or dynamic inserts, made with discrete components. Notes: Both transistors should be low noise types. In the original circuit, I used BC650

Posted at 08-11-30 by Admin views(21555)

Notes: This preamplifier has a low output impedance, and is designed to drive long cables, allowing you to listen to a remote music source without having to buy expensive screened cables. The very low output impedance of around 16 ohms at 1KHz, makes

Posted at 08-11-30 by Admin views(3062)

Radio broadcasting should be transformed into digital multimedia broadcasting by all necessary means. Michael Hepp, CEO of the American Digital Audio Trade Organization, said during the celebration of World Broadcasting Day. For most of the 20th cent

Posted at 21-03-16 by SKYSKY views(308)

Notes: This circuit was submitted by Graham Maynard from Newtownabbey, Northern Ireland. It has an exceptionally fast high frequency response, as demonstrated by applying an 100kHz squarewave to the input. All graphs were produced using Tina Pro. Th

Posted at 08-11-30 by Admin views(4639)

Broadly speaking, DVB (Digital Video BroadcasTIng) technology refers to the broadcasting of data containers that can transmit all types of data [1]. DVB simply transmits compressed images, sounds or data to the receiving end through these containers.

Posted at 21-07-09 by SKYSKY views(372)