Electronic Design: Audio Oscillator Circuit using ICL8038

Audio Circuit. - This is one of implementation of ICL8038 IC to build audio generator or oscillator system. It is only need small component to build this electronic circuit that basically using ICL8038 and other component.

The electronic design circuit of audio oscillator using ICL8038 is look like in Figure 1 below. Other component used like diode, resistors, capacitors, and variable resistor.

Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.

Electronic Circuit Design

Figure 1. Electronic Design: Audio Oscillator Circuit using ICL8038 (Source: Circuitstoday)

Component Parts

• ICL8038
• Resistors
• Capacitors
• Variable Resistors
• Diode

Description

The electronic circuit design like in Figure 1 above show you audio oscillator circuit using ICL8038. Other component need also that can supply with low voltage DC +10V and - 10V source to charge this IC and all system component from power supply built. With this electronic design circuit you can produce audio generator with 3 waves that useful now.

According Circuitstoday blog mentioned thatICL8038 is a monolithic waveform generator IC that can produce sine, square and triangular waveforms with very little distortion. The frequency can be programmed from 0.001Hz to 300 KHz using external timing capacitor and resistor. Frequency modulation and sweeping can be attained by using an external voltage. Other features of the ICL8038 are high linearity, high level outputs, simultaneous sine, square, triangle wave outputs, low external parts count, high temperature stability etc.

The working of ICL8038 is as follows. The external timing capacitor (C2 in the circuit diagram) is charged and discharged using two internal current sources. The first current source is on all the time and second current is switched ON and OFF using a flip-flop. Suppose the second current source is OFF and the first current source is ON, then the capacitor C2 will be charged with a continuous current (i) and the voltage across C2 increases linearly with time. When the voltage reaches 2/3 supply voltage, controlling flip flop is triggered and the first current source is activated. This current source carries double the current (2i) making the capacitor C2 is discharged with a current i and the voltage across it drops linearly with time. When this voltage reaches 1/3 supply voltage, the flip flop is resetted to the initial condition and the cycle is repeated again.

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Electronic Design: Bridge Power Audio Amplifier Circuit using LM380 IC

Audio Circuit. - This is one of implementation of LM380 IC to build bridge power amplifier for your audion sound system. It is only need small component to build this electronic circuit that basically using LM380 IC and other component.

The electronic design circuit of bridge power amplifier using 555 IC is look like in Figure 1 below. Other component used like resistors, capacitors, and variable resistor.

Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.

Electronic Circuit Design

Figure 1. Bridge Power Audio Amplifier Circuit using LM380 IC (Source: www.elecrtonicsdesign.org)

Component Parts

• R1 =2 MΩ potentiometer
• R2 = 2.7 Ω
• R3 = 1 MΩ
• C1, C2, C3 = 0.1 µF
• C4 = 51 pF
• IC1, IC­2 = LM380 audio power amplifier
• 8Ω 1-W speaker

Description

The electronic circuit design like in Figure 1 above show you bridge power audio amplifier using LM380 IC. Other component need also that can supply with low voltage DC 15V source to charge this IC and all system component from power supply built. With this electronic design circuit you can produce power audio amplifier that useful now.

According ElectronicsProject blog mentioned that here is simple circuit of bridge power audio amplifier used in application requiring more power than is provided by the single LM380 amplifier, the two LM380s can be used in the bridge configuration shown in figure 1. In this arrangement (bridge power audio amplifier) the maximum output voltage swing will be twice that of a single LM380 amplifier; therefore, the power delivered to the load by bridge power audio amplifier will be four times as much. For improved performance, potentiometer R3 should be used to balance the output offset voltage of the LM380s. Here R2 C3 for stability with high-current load.

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Electronic Design: Motor Bike Brake Horn Circuit using Transistors

Audio Circuit. - There are many audio circuit of electronic design implemented in automotive car and motorcycle in this time. It is look implemented to build brake horn in motorcycle using small component electronic now.

One of this time we will show you one electronic design circuit that named with motor bike brake horn based on transistors component look like in Figure 1 below. Other component used like resistors, capacitors and also speaker used in this circcuit design.

Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.

Electronic Circuit Design

Figure 1. Electronic Design: Motor Bike Brake Horn Circuit using Transistors (Source: ElecronicProject)

Component Parts

• R1, R7 = 2.2 KΩ
• R2, R4 = 820 Ω
• R3, R5 = 470 Ω
• R6 = 4.7 KΩ
• R8 = 10 KΩ
• R9 = 4.7 Ω, 0.5W
• C1 = 22 µF/25v
• C2 = 4.7 µF/63V
• C3 = 100v/16V
• C4 = 0.047 µF
• C5 = 0.01 µF
• T1 – T4 = BC148B
• T5 = SL100
• LS1 = 4Ω speaker

Description

The electronic circuit design like in Figure 1 above show you motor bike brake horn circuit using transistors. Other component need also that can supply with low voltage DC 4.5 - 12V source to charge this transistor and all system component. With this electronic design circuit you can produce motor bike brake horn that useful now.

According ElectronicProjects blog mentioned that the circuit can be operated from 4.5V to 12V DC or direct from the brake point of the motor-bike, Resistor R7 should be replaced with 1-ohm. 1/2W in case of an 8-ohm speaker. T5 is a driver transistor. C3 polarity can be reversed for a sudden off of the circuit.

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Electronic Design: Wind Sound Generator Circuit using Transistor

Generator Circuit. - This is the other electronic design circuit for implementating of transistors and transformer in this time for you. This electronic design circuit mentioned with wind sound generator using transistors as the major component used.

The electronic design circuit of wind sound generator circuit look like shown in Figure 1 below. From the circuit shown, that there many other major component used like resistor, capacitor, speaker, and transformer.

Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.

Electronic Circuit Design

Figure 1. Electronic Design: Wind Sound Generator Circuit using Transistor (Source: ElectronicProjects)

Component Parts

• R1 = 1 MΩ
• R2 = 4.7 KΩ
• R3 = 100 KΩ
• R4 = 10 Ω
• VR1 = 1 MΩ
• C1 = 0.01 µF
• C2 = 0.0033 µF
• C3 = 1000 µF/16V
• T1, T2 = BC548
• D1 = 1N4001
• X1 = 230V AC Primary To 9V/6V – 0V AC Secondary
• LS1 = 8Ω speaker

Description

The electronic circuit design like in Figure 1 above show you wind sound generator circuit using transistors. Other component need also that can supply with low voltage DC 9V source to charge this transistor and all system component. With this electronic design circuit you can produce wind sound generator that useful now.

According ElectronicProjects blog mentioned that using this simple circuit, one can generate the sound of wind. The circuit is basically an astable multivibrator build around two NPN transistors.
By adjusting the 1M potentiometer (VR1), the sound can be changed from that of wind to storm, sound of sea, hiss of escaping gas from a container through a small hole etc. A 9-Volt or 6-volt unregulated power supply is enough. How-ever, a battery may be used instead. The output sound will be slightly changed. The prototype has been successful tested with the given power supply. Also and 8-ohm, 5cm, low wattage speaker is recommended.

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Electronic Design: Stereo Channel Selector Circuit using KA2281 IC

Audio Circuit. - There are many audio circuit design to get best result in audio system this time. One design is how to select the output stereo from many input audio source. This is named with stereo channel selector that can select the many input selector to output stereo.

In here we will show you one of the stereo channel selector circuit with four channel that selected one in output stereo. So, the electronic design circuit of stereo channel selector circuit look like shown in Figure 1 below. From the circuit shown, that there many integrated circuit (IC) used look like KA2281, NE555, CD4017, and CD4066.

Beside we will show you electronic design circuit and component parts need, we also will give you global description about this circuit. So, please enjoy to continue reading this article until finish and get more useful.

Electronic Circuit Design

Figure 1. Electronic Design: Stereo Channel Selector Circuit using KA2281 IC (Source: ElectronicsZone)

Component Parts

• NE555 IC
• KA2281 IC
• CD4017 IC
• CD4066
• Resistors
• Capacitors
• LEDs
• Variable resistor
• Diode 1N4004

Description

The electronic circuit design like in Figure 1 above show you stereo channel selector circuit using KA2281 IC. Other component need also that can supply with low voltage DC 12V source to charge this IC and all system. With this electronic design circuit you can produce stereo channel selector for your audio system that useful now.

According ElectronicsZone blog mentioned that when power supply is turned ‘on’, channel A (AR and AL) is selected. If no audio is present in channel A, the circuit waits for some time and then selects the next channel (channel B). This search operation continues until it detects audio signal in one of the channels. The inter-channel wait or delay time can be adjusted with the help of preset VR1. If still longer time is needed, one may replace capacitor C1 with a capacitor of higher value.

Suppose channel A is connected to a tape recorder and channel B is connected to a radio receiver. If initially channel A is selected, the audio from the tape recorder will be present at the output. After the tape is played completely, or if there is sufficient pause between consecutive recordings, the circuit automatically switches over to the output from the radio receiver. To manually skip over from one (selected) active channel to another (non-selected) active channel, simply push the skip switch (S1) momentarily once or more, until the desired channel input gets selected. The selected channel (A, B, C, or D) is indicated by the glowing of corresponding LED (LED11, LED12, LED13, or LED14 respectively).

IC CD4066 contains four analogue switches. These switches are connected to four separate channels. For stereo operation, two similar CD4066 ICs are used as shown in the circuit. These analogue switches are controlled by IC CD4017 outputs. CD4017 is a 10-bit ring counter IC. Since only one of its outputs is high at any instant, only one switch will be closed at a time. IC CD4017 is configured as a 4-bit ring counter by connecting the fifth output Q4 (pin 10) to the reset pin. Capacitor C5 in conjunction with resistor R6 forms a power-on-reset circuit for IC2, so that on initial switching ‘on’ of the power supply, output Q0 (pin 3) is always ‘high’. The clock signal to CD4017 is provided by IC1 (NE555) which acts as an astable multivibrator when transistor T1 is in cut- off state.

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