Here the another amplifier circuit with single power IC from Phillips, TDA1514A. This is a hi-fi power amplifier circuit with 50W power output.
The 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 (e.g. Compact Disc equipment).
The circuit is totally protected, the two output transistors both having thermal and SOAR protection (see Fig.3). 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.
This is a stereo audio amplifier circuit which will deliver 12W audio power output on each channel. This circuit built based on single IC TDA1521 or TDA1521Q, supported with a few external components.
The TDA1521/TDA1521Q is a dual hi-fi audio power amplifier encapsulated in a 9-lead plastic power package.
The device is especially designed for mains fed applications (e.g. stereo tv sound and stereo radio). A heatsink is required to prevent IC overheating.
This is a great audio amplifier circuit based on single power IC TDA7294. TDA7294 is intended for use as a high quality audio class AB amplifier in hi-fi applications. It has very low noise and distortion, wide bandwidth and good output current capability, enabling it to supply high power into both 4Ω and 8Ω loads. It has both short circuit and thermal protection, so is quite robust.
Component part list:
R1_____________ 150R R2, R3, R5_____ 10K R4_____________ 680R R6_____________ 22K IC1____________ TDA 7294 Heatsink |
C1____________ 1u5F or 1u C2____________ 2n7F C3, C6________ 22uF 63V C4, C5________ 10uF 63V C7, C9________ 2200uF 50V C8, C10_______ 100nF |
This is a class AB audio power amplifier circuit which built using a TDA2002 or TDA2003 power amplifier IC module. These are replacements for the original LM383 which is no longer available. It is easy to build and has a minimum of external components. The module has both short circuit protection and thermal protection. It can drive loads as low as 1.6 ohm and is capable of delivering over 10 watts from a 16 V supply.
Component parts:
| R1____________ potentiometer 10 k ohm R2____________ 220 ohm R3____________ 2R2 ohm R4____________ 1 ohm IC1___________ TDA2002/3 amplifier module 1 Heat sink |
C1_____________ 10uF/50V electrolytic capacitor C2_____________ 470uF/16V electrolytic capacitor C3_____________ 2200uF 25V electrolytic capacitor 1 C4_____________ 100 nF mylar 1 C5_____________ 100 nF monoblock 1 C6_____________ 100uF 25V ecap 1 |
This is the circuit diagram of mini FM received that build based on single FM IC TDA7012T.
Component Parts List:
| R1 = 8kΩ2 R2 = 10kΩ R3 = 390Ω C1,C3 = 10nF C2,C6,C9,C16 = 100nF C4 = 33pF C5 = 25pF trimmer (Murata type TZB4Z250AB10R00) C7,C10 = 1nF5 C8 = 820pF |
C11 = 1nF C12 = 68pF C13 = 220pF C14 = 47μF 10V (Nichicon UWX1A470MCL1GB 5.5mmL chip type) C15 = 3nF3 L1 = 36nH (4 turns 0.5mm silver-plated wire, inside diameter 4mm; length 7mm) L2 = 1μH, SMD case 0805 (fres > 300 MHz) IC1 = TDA7021T (SMD in SO16 case) |
