6W amplifier using TA7222AP
Description.
Here is the circuit diagram of a 6W amplifier using the TA7222AP from Toshiba.TA7222AP is an excellent integrated audio amplifier which can deliver 5.8W to a 4 Ohms load at 12V supply voltage. The IC has very good features like, muting function, low distortion, high ripple rejection, short circuit protection, thermal shut down etc. This amplifier can be operated from 8 to 12V and this makes it ideal for car radio applications.
Circuit diagram.
Notes.
- The circuit can be assembled on a Vero board.
- Use 12V DC for powering the circuit.
- The IC must be heatsinked.
- Speaker can be a 4 ohms one.
- For optimum performance input and output must be separately grounded.
This is a GREAT service you are providing.
Congratulations on your initiative.
Adelaide
Australia…..
Sir i have to ask that can we use a Speaker of 8 ohm rather than 4 ohm???
and secondly is there any effect on the circuit by using a low or high ohm’s speaker at the output??
Kindly let me know..
Thanks
You can use an 8 ohm speaker, but the output power will be reduced by around half.
If the out put voltage from the amplifier is say V then the power output is V² / Z (speaker impedance). If the impedance decreases the current through the load increases, hence the output stage of the amplifier must be capable of this requirement if not the output component may get burnt. If the impedance increased the out put power will get reduced but no damage to the equipment. Use only the range of recommended speakers only by the manufacturer/ designer