Connect Amplifier to Earphone
Posted: 26 Jun 2017, 08:54
Dud…
I m working on building amplifier based on TDA2822 which receives input from my phone and feeds them into a small 2″ speaker provided by 9 v battery.
I connected the circuit but am not understanding 1 thing…
I bought a new earphone and removed its wires..(cause such wires are not available in my area) then i stripped the insulation of left earphone. I got tho wires inside.
I m not understanding where to connect those wires to input of amplifier …. So please comment on how to give inputs to that amplifier.
I mean…. I got 2 wires…. One red and one coppery color…on breaking left earphone…. And other 2 wires… Red and coppr again… An breaking right earphone… amp circuit diagram says that red of left earphone to be given to pin 6 and red of right earphone to pin 7… What to do of remaining teo copper wires??
The datasheet of TDA822
my TDA2822 became too hot after an hour of using it…..so i want to know which amp is small in size but provides undistorted o\p with in voltage 3V and above… it should be ultra small and no external caps, resistance etc…..
and which is best small amp??
I m working on building amplifier based on TDA2822 which receives input from my phone and feeds them into a small 2″ speaker provided by 9 v battery.
I connected the circuit but am not understanding 1 thing…
I bought a new earphone and removed its wires..(cause such wires are not available in my area) then i stripped the insulation of left earphone. I got tho wires inside.
I m not understanding where to connect those wires to input of amplifier …. So please comment on how to give inputs to that amplifier.
I mean…. I got 2 wires…. One red and one coppery color…on breaking left earphone…. And other 2 wires… Red and coppr again… An breaking right earphone… amp circuit diagram says that red of left earphone to be given to pin 6 and red of right earphone to pin 7… What to do of remaining teo copper wires??
The datasheet of TDA822
my TDA2822 became too hot after an hour of using it…..so i want to know which amp is small in size but provides undistorted o\p with in voltage 3V and above… it should be ultra small and no external caps, resistance etc…..
and which is best small amp??