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Using kd-28 to do the voice switch circuit diagram – Circuit Schematic
Using kd-28 to do the voice switch circuit diagram
As shown is a practical voice-activated switch, A1 amplifier connected as a conventional microphone B picked up the audio control signal is amplified. After th...
External audio spectrum display circuit diagram – Circuit Schematic
External audio spectrum display circuit diagram
As shown in the external audio spectrum display circuit, high-end audio equipment are generally audio spectrum display apparatus can keep abreast of both insta...
Flash music gyro schematic – Circuit Schematic
Flash music gyro schematic
As shown in the circuit diagram of a flash music gyro, which is composed of three end music integrated circuits ICl UM66T19L a variety of colors and light-emit...
TV audio circuit TDA2009 – Circuit Schematic
TV audio circuit TDA2009
As shown in the audio circuit is commonly used in color television sets (TDA2009) Pin 1: 1.2V-- left channel input Pin 2: 0.8V-- left channel feedback Pin 3: 1...
Overload protection circuit diagram of 25 ohm speaker – Circuit Schematic
Overload protection circuit diagram of 25 ohm speaker
As shown in overload protection circuit power 650mW, supply voltage 12V, speaker 25 ohms. Part Component Specifications: VT1: transistor NB111EH/J VT2: Transis...
Audio Monitoring System – Circuit Schematic
Audio Monitoring System
As shown in Figure Block Diagram for the system. Important Important programs for broadcast monitoring period, using the selected demodulator, can be displayed...
8 low-pass filter MAX291 TA7504P schematic – Circuit Schematic
8 low-pass filter MAX291 TA7504P schematic
As shown in Figure 8 times the low-pass filter circuit. This circuit uses eight low-pass filter circuit switched-capacitor configuration. Changing the cutoff f...
INA217 professional miniature microphone microphone circuit diagram of a typical preamp – Circuit Schematic
INA217 professional miniature microphone microphone circuit diagram of a typical preamp
As shown in FIG constituted by INA217 professional miniature microphone (microphone) typical preamp circuit. FIG set a switch for selecting whether the choice ...
TV audio circuit diagram TA8218AH – Circuit Schematic
TV audio circuit diagram TA8218AH
As shown in FIG audio circuit is commonly used in color television, TA8218AH pin functions and reference voltage: Pin 1: 1.9V-- inverting input Pin 2: 2.1V - R...
Two-channel speaker protection schematic – Circuit Schematic
Two-channel speaker protection schematic
As shown for the speaker protection circuitry. It is designed for the left and right channels operate independently. The figure (to the left channel as an exam...
Pocket-sized device to help Xin – Circuit Schematic
Pocket-sized device to help Xin
As shown for the portable hearing aid circuitry, which is the input coupling capacitor C1. C2 for the filter capacitor, to prevent internal bias signal input c...
Five uses tri-state logic audio pen CD4066 555 – Circuit Schematic
Five uses tri-state logic audio pen CD4066 555
As shown in Figure five uses tri-state logic pen audio circuit. The circuit mainly by the multivibrator, four-way switch CD4066 (IC1) circuit with some RC com...
Using an external transistor ten-band equalizer – Circuit Schematic
Using an external transistor ten-band equalizer
Another example of application is extended. It uses TA7796 and five external transistor to form a ten -band equalizer circuit, the lowest center frequency of th...
Analog sound KD156 have lingering Ding Dong sound of birds singing and the integrated circuit – Circuit Schematic
Analog sound KD156 have lingering Ding Dong sound of birds singing and the integrated circuit
Analog sound KD156 have lingering Ding Dong sound of birds singing and the integrated circuit ...
Audio-frequency generator circuit – Circuit Schematic
Audio-frequency generator circuit
An audio frequency signal generator shown in FIG. Can output audio signal, 465kHz spectral amplitude signals, 52,5Hz4-16Q5kHz high frequency amplitude modulated...
Additional formula LP Recorder increased compensation circuit diagram image HQ – Circuit Schematic
Additional formula LP Recorder increased compensation circuit diagram image HQ
After this circuit can compensate for additional LP recorder function defects in image quality. Television signal frequency component reflects details of the sc...
STK6327A application circuit – Circuit Schematic
STK6327A application circuit
After the graphic equalizers are universally applied, and the emergence of a new kind of equalizer, called a parametric equalizer that amount of EQ, or from the...
Practical sound level monitor circuit diagram – Circuit Schematic
Practical sound level monitor circuit diagram
Acoustic detector consists of a Schmitt trigger IC555 connected components. Just input exceeds a certain voltage, its output will change state, from high to low...
Low-distortion audio limiter circuit diagram – Circuit Schematic
Low-distortion audio limiter circuit diagram
AUD.LIMITER The level can limit level trim potentiometer to adjust. If you exceed the level of the potentiometer, the output from the half of the operational am...
AM-fidelity wireless microphone circuit – Circuit Schematic
AM-fidelity wireless microphone circuit
AM This circuit is tested and functionable. LM389 integrated circuit as the core element, the voice channel number acquired by the microphone MIC and converted ...