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AUDIO_MIXER – Circuit Schematic
AUDIO_MIXER
An audio mixer is a handy circuit that will combine two or more audio signal sources into one signal channel. The figure shows an audio mixer that is built arou...
VOICE LEVEL METER – Circuit Schematic
VOICE LEVEL METER
Using an LM3915 VU meter LED bar graph driver?10 LEDs are driven?A simple audio amplifierdrives a detector circuit?which provides dc drive for the LM3915.....
VOICE LEVEL METER – Circuit Schematic
VOICE LEVEL METER
Using an LM3915 VU meter LED bar graph driver?10 LEDs are driven?A simple audio amplifierdrives a detector circuit?which provides dc drive for the LM3915.....
Stereo VU Meter – Circuit Schematic
Stereo VU Meter
This is a STEREO LED LEVEL METER. It s the cheapest and best bar graph display available and best of all, it uses readily available components.You only need a h...
Stereo VU Meter – Circuit Schematic
Stereo VU Meter
This is a STEREO LED LEVEL METER. It s the cheapest and best bar graph display available and best of all, it uses readily available components.You only need a h...
Schematic of The Infrared Rays Wireless Headphone – Circuit Schematic
Schematic of The Infrared Rays Wireless Headphone
Because of the transmitter circuit of the inductive headphone must installed on the room wall or on the ceiling, so the inductive headphone can not be used outd...
Schematic of The Infrared Rays Wireless Headphone – Circuit Schematic
Schematic of The Infrared Rays Wireless Headphone
Because of the transmitter circuit of the inductive headphone must installed on the room wall or on the ceiling, so the inductive headphone can not be used outd...
Audio Level Meter circuits – Circuit Schematic
Audio Level Meter circuits
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Audio Level Meter circuits – Circuit Schematic
Audio Level Meter circuits
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Two-tone electronic doorbell 2 – Circuit Schematic
Two-tone electronic doorbell 2
The two-tone electronic doorbell circuit is composed of the trigger control circuit and doorbell generating circuit, and it is shown in Figure 3-108. Trigger co...
Two-tone electronic doorbell 2 – Circuit Schematic
Two-tone electronic doorbell 2
The two-tone electronic doorbell circuit is composed of the trigger control circuit and doorbell generating circuit, and it is shown in Figure 3-108. Trigger co...
Two-tone electronic doorbell 1 – Circuit Schematic
Two-tone electronic doorbell 1
The two-tone electronic doorbell circuit is composed of the input trigger circuit and audio output circuit, ans it is shown in Figure 3-107. The input trigger c...
Two-tone electronic doorbell 1 – Circuit Schematic
Two-tone electronic doorbell 1
The two-tone electronic doorbell circuit is composed of the input trigger circuit and audio output circuit, ans it is shown in Figure 3-107. The input trigger c...
Touching eight-sound five-flash dynamic toy circuit diagram – Circuit Schematic
Touching eight-sound five-flash dynamic toy circuit diagram
Touching eight-sound five-flash dynamic toy circuit diagram is shown in the diagram. It consists of HFC3018 module, and it can generate eight kinds ofdifferent ...
Touching eight-sound five-flash dynamic toy circuit diagram – Circuit Schematic
Touching eight-sound five-flash dynamic toy circuit diagram
Touching eight-sound five-flash dynamic toy circuit diagram is shown in the diagram. It consists of HFC3018 module, and it can generate eight kinds ofdifferent ...
Three-tone electronic doorbell 2 – Circuit Schematic
Three-tone electronic doorbell 2
The three-tone electronic doorbell circuit consists of the coding triggered circuit, multi-tone generator and audio amplifier circuit, and it is shown in Figure...
Three-tone electronic doorbell 2 – Circuit Schematic
Three-tone electronic doorbell 2
The three-tone electronic doorbell circuit consists of the coding triggered circuit, multi-tone generator and audio amplifier circuit, and it is shown in Figure...
Three-tone electronic doorbell 1 – Circuit Schematic
Three-tone electronic doorbell 1
The three-tone electronic doorbell circuit consists of buttons Sl-S3, transistors Vl, V2, speaker BL, resistors Rl-R3, capacitors Cl, C2, diode VD and battery G...
Three-tone electronic doorbell 1 – Circuit Schematic
Three-tone electronic doorbell 1
The three-tone electronic doorbell circuit consists of buttons Sl-S3, transistors Vl, V2, speaker BL, resistors Rl-R3, capacitors Cl, C2, diode VD and battery G...
Percussion electronic doorbell 1 – Circuit Schematic
Percussion electronic doorbell 1
The electronic doorbell circuit is composed of the pickup amplifier, monostable trigger circuit, pulse counter circuit, music generating circuit and audio ampli...