This is the block diagram of an completed audio amplifier from input (microphone for example) to the output (loud speaker). You may add some additional block like an equalizer between pre-amplifier and tone control, or add a crossover between power amplifier anf loudspeaker.

Notes:

• Microphone – a transducer which converts sound to voltage.
• Pre-Amplifier – amplifies the small audio signal (voltage) from the microphone.
• Tone and Volume Controls – adjust the nature of the audio signal. The tone control adjusts the balance of high and low frequencies. The volume control adjusts the strength of the signal.
• Power Amplifier – increases the strength (power) of the audio signal.
• Loudspeaker – a transducer which converts the audio signal to sound.

Alright, i’ve been messing around with some electronics. I was just curious if you are able to wire a 9 volt battery into a camera that originally took an AA battery. Please be detailed if you can, thank you!!

The following is a general block diagram of a radio receiver:

Notes:

• Aerial – picks up radio signals from many stations.
• Tuner – selects the signal from just one radio station.
• Detector – extracts the audio signal carried by the radio signal.
• Audio Amplifier – increases the strength (power) of the audio signal. This could be broken down into the blocks like the Audio Amplifier System shown above.
• Loudspeaker – a transducer which converts the audio signal to sound.

I am installing a backup camera into my car the license plate light is blinding the camera at night time making it useless. I can’t figure out the name of the electronic component i need. There are two inputs and one output. A is the reverse light volt. (just used for signal). B is the license plate light. C is the output of the circuit.Normally A is off (when moving forward) so only B is detected and there is an output from C. When voltage is detected on input A, the circuit should cut power to output C.

-Thanks