![]() On the other hand, pushing the S2 and S3 buttons will increase and decrease the volume. When you press S1, you will be pushing the circuit into mute mode.īut, when you push S4, you will be selecting between audio balance control mode or volume control mode.Īlso, LED D6 will indicate which mode you push. Push-buttons S1 and S4 work to control the circuit. S1, S2, S3, and S4 in the circuit are push buttons. However, the LEDs stay off when the system is in mute performance. This action only occurs if the electronic circuit is in balance control. When there is a center position, the LED at the center glows. Contrastingly, resistor R6 activates the LEDs by showing the volume. ![]() Resistors R5 and R1 limit current via status indicator LEDs. The LEDs indicate balance and volume levels. Significantly, bypassing noise from the VLOGIC and VDD sources improves the complete performance and stability of the circuit.Īdditionally, capacitors C3 and C4 carry out the noise biasing process.ĭ5 and D1 are indicator LEDs. The presence of a capacitor at pin 12(bias generator bypass) to the ground is a must. Pin10 is the buffered wiper terminal of the first internal preset potentiometer.Īt the same time, the second internal inexpensive potentiometer contains the left channel output. Pin 10 contains the right channel output. These pins become short after they join pin 11 using connecting wires.Īlso, Pin 11 is the mid-bias voltage output of the IC. Notably, Pin 6 and 9 are the low terminals of the inexpensive internal potentiometers. The left input should reach a high terminal of the second internal digital preset potentiometer.īut, on the first internal digital potentiometer of the IC. It is because the right input goes to the high terminal. The right and left channel inputs go in separate directions. Pin 8 receives the right channel input, while pin 17 gets the left channel input. Notably, the process becomes complex when you involve an amplifier.īut, overall, the audio control involves the number of volts reaching the speaker. This action reduces the volts that can reach the speaker, reducing the speaker's volume. Thus allowing more volts to travel to the speaker raising the volume.Ĭontrastingly, turning the knob to the left increases the resistance. In that, it raises or reduces the resistance from electrical signals.įor example, you reduce the resistance when turning the knob to the right. When you turn the resistor in a specific direction, the knob is a resistor. The control knob acts as a variable resistor in an electrical circuit. However, the factors behind the phenomenon are pretty complicated. On the other hand, turning the knob to the right increases the volume. This phenomenon is that the volume reduces any time you rotate the volume knob to the left. Volume control efficiently works with a certain phenomenon. Notably, a volume controller does not require an external circuit.īecause the device has an inbuilt bias voltage source, reducing the number of external components.Ī single or dual power supply can operate a volume controller integrated IC. This controller has an interface with push buttons for external control in a TSSOP package. We will discuss the volume controller circuit, its working, and the step-by-step process of making one.Īlso, it will help you learn and make the right connections for your needs! 1. Significantly, adjusting the volume assists in finding the correct volume and balance level for our audio equipment. A volume control circuit is a wiring system found in a volume controller. ![]() The course helps to build an audio device.
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