Friday, October 16, 2009
This is 48 Watt Amplifier by IC TDA1514A. the IC TDA1514A supports mute and stand-by modes. I’ve never built this one, so I’ve got no suggestions concerning practical construction.
Note:
Use -25 V+25 V DC for powering the circuit.
The IC must be heatsinked.
For optimum performance input and output must be separately grounded.
The IC must be heatsinked.
For optimum performance input and output must be separately grounded.
The IC TDA1514A integrated circuit is a hi-fi power amplifier for use as a building block in radio, tv and other audio applications. The high performance of the IC meets the requirements of digital sources. The circuit is totally protected, the two output transistors both having thermal and SOAR protection. The circuit also has a mute function that can be arranged for a period after power-on with a delay time fixed by external components.
Parameters IC TDA1514A
Supply voltage range......................................Min ± 10 V, Max ±30 V.
Output power, VP = ± 23 V, RL = 4 Ohm..........48 Watt.
Closed loop voltage gain................................30DB.
Input resistance............................................20 KOhm.
Output current (repetitive peak)......................Max 8 A.
Storage temperature range............................-55 to + 150 °C.
Mute voltage................................................7.25 V.
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