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Tape recorder clock oscillator

Published:2013/2/21 0:47:00 Author:Ecco | Keyword: Tape recorder , clock oscillator

Tape recorder clock oscillator is shown as figure. (View)

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2 Transistor FM Transmitters

Published:2013/2/19 20:37:00 Author:muriel | Keyword: 2 Transistor , FM Transmitters

2 Transistor FM Transmitters
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0 ~ +30 mV unipolar input , 4 ~ 20mA output circuit with multi-functional sensor signal conditioner AD693

Published:2013/2/19 1:26:00 Author:Ecco | Keyword: 0 ~ +30 mV , unipolar input, 4 ~ 20mA, output , multi-functional sensor , signal conditioner

0 ~ +30 mV unipolar input , 4 ~ 20mA output circuit with multi-functional sensor signal conditioner AD693
The loop power Us allowable range is +12 ~ +36 V. RL is a load resistor in the current loop, iLoop is the loop current. (View)

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The broadband pulse generator with independently adjustable duty cycle

Published:2013/2/19 2:25:00 Author:Ecco | Keyword: broadband pulse generator , independently , adjustable, duty cycle

The broadband pulse generator with independently adjustable duty cycle is shown as figure. (View)

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Pulse oscillator with adjustable duty cycle and frequency

Published:2013/2/18 2:11:00 Author:Ecco | Keyword: Pulse oscillator, adjustable duty cycle , frequency

Pulse oscillator with adjustable duty cycle and frequency is shown as figure. (View)

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Signal acquisition and processing circuit diagram

Published:2013/2/18 0:10:00 Author:Ecco | Keyword: Signal acquisition , processing

Signal acquisition and processing circuit diagram is shown as figure. (View)

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FM Transmitter 1

Published:2013/2/17 20:29:00 Author:muriel | Keyword: FM Transmitter

FM Transmitter 1
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Telephone Transmitter

Published:2013/2/17 20:27:00 Author:muriel | Keyword: Telephone Transmitter

Telephone Transmitter
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Variable pitch multivibrator circuit diagram

Published:2013/1/31 0:44:00 Author:Ecco | Keyword: Variable pitch, multivibrator

Variable pitch multivibrator circuit diagram
This circuit is composed of two 555 time-base circuits, and it can issue 400 ~ 2500Hz oscillatory wave with continuous changes, it is similar to the sound of public security police vehicles. The circuit consists of the boot delay, low-frequency oscillator and modulated tone generator. (View)

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High-stability Wien bridge oscillator circuit

Published:2013/1/30 1:46:00 Author:Ecco | Keyword: High-stability , Wien bridge , oscillator

High-stability Wien bridge oscillator circuit
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Asymmetric square wave circuit

Published:2013/1/30 1:48:00 Author:Ecco | Keyword: Asymmetric square wave

Asymmetric square wave circuit is shown as figure. (View)

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Keying freedom multivibrator circuit

Published:2013/1/30 1:47:00 Author:Ecco | Keyword: Keying freedom multivibrator

Keying freedom multivibrator circuit is shown as figure. (View)

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LMK04000 reference design schematics with crystal oscillator

Published:2013/1/29 2:26:00 Author:Ecco | Keyword: reference design , crystal oscillator

LMK04000 reference design schematics with crystal oscillator
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The music scale signal generator (NE555, CD4017)

Published:2013/1/29 2:25:00 Author:Ecco | Keyword: music scale, signal generator

The music scale signal generator (NE555, CD4017)
The musical scale signal is a kind of oscillation pulse which is arranged a certain frequency interval, it can be generated by mechanical vibration of the various instruments, and also can be generated by oscillator composed of the electronic circuit. The oscillator with digital circuit can generate l0 octaves Loops by stepping control, and the circuit is shown in the figure. The circuit consists of basic scale oscillator, stepper pulse oscillator and scale interval control circuit and other components. (View)

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Harmonic generator (LM318)

Published:2013/1/28 2:03:00 Author:Ecco | Keyword: Harmonic generator

Harmonic generator (LM318)
The harmonics generator composed of two comparators and a summing amplifier is shown in Figure. It can make use of any non- party sine, triangle, sawtooth waveform to get the harmonic which can be widely used in phase-locked loop, waveform generator, electronic musical instruments and other harmonic applications. (View)

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Frequency shift keying (FSK) square wave generator with CD4046B

Published:2013/1/28 2:11:00 Author:Ecco | Keyword: Frequency shift , keying, FSK, square wave generator

Frequency shift keying (FSK) square wave generator with CD4046B
The keying signal is applied to control input end-pin 9 of CD4046, when the keying input is 1 level, the circuit will generate 2.4kHz audio frequency; when the input is 0 level, it will generate l.2kHz audio frequency. High - frequency tones are preset by the component values of Cl and Rl, and low-frequency tones is preset by the value of Cl, R2 and R3. (View)

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Oblique wave generator with CD4046

Published:2013/1/28 2:14:00 Author:Ecco | Keyword: Oblique wave generator

Oblique wave generator with CD4046
The external capacitor connected to CD4046's pin ⑥, ⑦ is divided into two parts, namely grounded. Because their charge and discharge time is different, the waveform generated by voltage-controlled oscillator can have a huge difference in the rising and falling edges. (View)