Advertisement
Two-Transistor Sine-Wave Oscillator – Circuit Schematic
Two-Transistor Sine-Wave Oscillator
This oscillator uses two transistors and operates the crystal in the fundamental mode. CT and C2 should...
Lc Sine-Wave Generator – Circuit Schematic
Lc Sine-Wave Generator
This compact LC oscillator offers a frequency range of about 1 kHz to almost 9 MHz and a low-distortion sine-wave ou...
Pure Sine-Wave Generator – Circuit Schematic
Pure Sine-Wave Generator
This circuit produces a pure, - 80-dB THD sine wave with a frequency that is equal to the fc of IC3"s filter. A TT...
Sine-Wave Generator – Circuit Schematic
Sine-Wave Generator
Cascading two identical integrators will thus result in an overall phase shift of 180° and an amplification of unity (p...
Sawtooth Generator For Sweep Generators – Circuit Schematic
Sawtooth Generator For Sweep Generators
This circuit will generate a linear sawtooth between 30 Hz and 3 000 Hz. Ql is a constant-current s...
Ramp Generator – Circuit Schematic
Ramp Generator
Providing a 0-to 10-V excursion from 0.4 Hz to 100 kHz, this circuit offers both simplicity and small size. The negative cur...
Digital Sawtooth Generator – Circuit Schematic
Digital Sawtooth Generator
This straightforward circuit uses an NE555 timer as an oscillator, a 7493 counter chain and a DAC0806 D/A conver...
Fast Low Duty-Cycle Pulse Oscillator – Circuit Schematic
Fast Low Duty-Cycle Pulse Oscillator
This simple and symmetrical free-running generator has a 50- output impedance, a pulse width of 100 ns...
Stable Start-Stop Oscillator – Circuit Schematic
Stable Start-Stop Oscillator
Oscillators that generate a predetermined number of pulses are often required in applications such as video wo...
Wien-Bridge Oscillator – Circuit Schematic
Wien-Bridge Oscillator
The HA2541 is well-suited for use as the heart of an oscillator. In spite of the rudimentary diode limiting that is ...
Audio Oscillator Ii – Circuit Schematic
Audio Oscillator Ii
The circuit"s frequency oscillation is /=2.8/ [Cix(/i + i2)]· Using the values shown, the output frequency can be varie...
Code-Practice Oscillator Iii – Circuit Schematic
Code-Practice Oscillator Iii
Capacitor CI charges through resistor Rl, and when the gate level established by potentiometer R2 is high enou...
Audio Oscillator – Circuit Schematic
Audio Oscillator
Two gates, U1A and U1B O/3 of a 4049 hex inveter), are connected in a VFO circuit. Components Rl, R3, and CI set the frequ...
Phase-Locked 20-Mhz Oscillator – Circuit Schematic
Phase-Locked 20-Mhz Oscillator
This circuit produces a 20-MHz clock phase locked to a 10-MHz clock present in the Apple MAC II. To generate...
Stable Vfo – Circuit Schematic
Stable Vfo
This VFO circuit covers from 2.13 to 2.58 MHz and is intended for use with an external mixer to heterodyne the signal to desired...
Simple Wlen-Bridge Oscillator – Circuit Schematic
Simple Wlen-Bridge Oscillator
In this circuit, the Wen-bridge network provides phase shift, and the lamp regulates the amplitude of the osc...
Low-Frequency Multiplier – Circuit Schematic
Low-Frequency Multiplier
This circuit uses a comparator as a Schmitt trigger (311H) and two active bandpass filters (LM318H). 3-kHz output ...
Sonic Defender – Circuit Schematic
Sonic Defender
This oscillator-driver produces a deafening sound of about 3 kHz, modulated with a 10-Hz warble. BZ1 is a Matsushita EFB-RP3...
Novel Metronome – Circuit Schematic
Novel Metronome
The LM3909 is configured so that the frequency of oscillation is dependent on a single RC timing circuit, which consists of...
Simple Electronic Metronome – Circuit Schematic
Simple Electronic Metronome
Two complementary transistors form a simple oscillator whose frequency range is from about 0.5 to several Hz. T...