1khz Oscillator | Electronic Project Circuits

Posts Tagged ‘1khz oscillator’

1 kHz to 30 MHz Oscillator using only Three Components

Building a square-wave oscillator using only three components is always a desirable accomplishment when space is tight, and if you can achieve a frequency range of 1 kHz to 30 MHz at the same time you have a component that can be used an a wide variety of applications.The Linear Technology LTC1799 (www.linear-tech.com/pdf/1799f.pdf) is the first IC that can manage this feat. It needs only an external resistor RSET to set the output frequency.

Source:http://www.elektor.com/magazines/2002/december/1-khz-to-30-mhz-oscillator-using-only-three.56109.lynkx
Thank you

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Categories: RF-Radio Frequency Tags: 1khz oscillator, Oscillator generator, rf modulator, RF-Radio Frequency

1KHz Sine wave Generator with Transistor BC238

Simple circuitry, low distortion, battery operated
Variable, low impedance output up to 1V RMS
Circuit description:
This circuit generates a good 1KHz sinewave adopting the inverted Wien bridge configuration (C1-R3 & C2-R4). It features a variable output, low distortion and low output impedance in order to obtain good overload capability. A small filament bulb ensures a stable long term output amplitude waveform. Useful to test the Precision Audio Millivoltmeter, Three-Level Audio Power Indicator and other audio circuits posted to this website.

Parts:
R1____________5K6 1/4W Resistor
R2____________1K8 1/4W Resistor
R3,R4________15K 1/4W Resistors
R5__________500R 1/2W Trimmer Cermet
R6__________330R 1/4W Resistor
R7__________470R Linear Potentiometer
C1,C2________10nF 63V Polyester Capacitors
C3__________100µF 25V Electrolytic Capacitor
C4__________470nF 63V Polyester Capacitor
Q1,Q2_______BC238 25V 100mA NPN Transistors
LP1___________12V 40mA Filament Lamp Bulb (See Notes)
J1__________Phono chassis Socket
SW1__________SPST Slider Switch
B1_____________9V PP3
Clip for 9V PP3 Battery

Please read more at the original source: http://www.redcircuits.com/Page13.htm