Advertisement
Low Frequency CTCSS PL Sub-Tone Audio Oscillator – Circuit Schematic
Low Frequency CTCSS PL Sub-Tone Audio Oscillator
The lf555afosc1. pdf file download is the diagram (with notations) of Sub-Tone (CTCSS or "PL") Oscillator, made with the famous 555 timer IC set up for astable-...
Single Pentode Wien Bridge Oscillator – Circuit Schematic
Single Pentode Wien Bridge Oscillator
His oscillator sought to use resistors and capacitors instead of bulky low frequency LC tank circuits to generate audio frequencies. He obtained low distortion ...
Negative Resistance Oscillators – Circuit Schematic
Negative Resistance Oscillators
The schematic of its mixer part shows such an oscillator. The oscillator LC circuit only has two connections to the valve. It has no tap or tickler coil. Oscill...
Klirrarmer Oszillator – Circuit Schematic
Klirrarmer Oszillator
...
Valve oscillator circuit 100 Metres and Below – Circuit Schematic
Valve oscillator circuit 100 Metres and Below
The congestion of the ether is becoming so great that efforts are continually being made to extend the channels of communication to higher frequencies. Waveleng...
Oscillator Control & GPS – Circuit Schematic
Oscillator Control & GPS
The VNGBOX micro needs to produce a very accurate, high resolution and very noise-free DC control voltage to steer the reference oscillator phase accurately. An...
Simple GPS Disciplined Reference – Circuit Schematic
Simple GPS Disciplined Reference
This design came about as a result of efforts to design a high stability reference which locked to a 10MHz source. With some minor hardware adaptation and compl...
Micro Function Generator – Circuit Schematic
Micro Function Generator
There are two main types: the most common is the Wein Bridge oscillator variety, which has low distortion, but offers only sinewave output and can suffer from a...
Circuit Crystal Oscillator/Amplifier – Circuit Schematic
Circuit Crystal Oscillator/Amplifier
This oscillator is a variation of the oscillator presented by Ulrich L. Rohde, DJ2LR, in his article "Evaluating Noise Sideband Performance in Oscillators", Ham...
High Frequency VCO Design – Circuit Schematic
High Frequency VCO Design
This note will review the process by which VCO (Voltage Controlled Oscillator) designers choose their oscillator`s topology and devices based on performance req...
VFO oscillator circuit – Circuit Schematic
VFO oscillator circuit
...
2 Terminal Test Oscillator – Circuit Schematic
2 Terminal Test Oscillator
Anyone who is interested in home construction will at some time or other have the need to measure the inductance of small coils. This can be a difficult problem...
Crystal Oscillator – Circuit Schematic
Crystal Oscillator
I currently have three: a really old optoelectronics Opto-7000 which I don`t use much, a newer Mitronics MIC-1028, and my most recent acquisition, a used Tektro...
Crystal-Oscillator Circuits – Circuit Schematic
Crystal-Oscillator Circuits
The frequency of a crystal-controlled oscillator is held constant to a high degree of accuracy by the use of a quartz crystal. The frequency depends almost enti...
Oscillators – Circuit Schematic
Oscillators
...
Solid State Circuits 2 – Circuit Schematic
Solid State Circuits 2
This circuit can be used from low frequencies to at least 120MHz using series resonant crystals on their fundamental or overtone mode. The output can be taken f...
Audio Frequency Oscillator for Learning CW – Circuit Schematic
Audio Frequency Oscillator for Learning CW
...
Single 10 Shunt Fed Hartley Oscillator for 80 meter CW – Circuit Schematic
Single 10 Shunt Fed Hartley Oscillator for 80 meter CW
This Hartley oscillator was built on the remains of a single tube Hartley using a single 45. The original circuit I constructed was one that was published in a ...
Crystal Oscillators – Circuit Schematic
Crystal Oscillators
...
Butler Oscillator – Circuit Schematic
Butler Oscillator
My first tasks involved buying some VHF parts + exploring the Butler crystal oscillator. Specifically, I`ll cover my experiences with the common base version of...