Morse Code Practice Oscillator

Morse Code Practice Oscillator
Morse Code Practice OscillatorMorse Code Practice Oscillator Electronic SchematicMorse Code Practice Oscillator 1Homemade telegraph key
4.5 5 4 Product



Click on the images to enlarge... 

This Morse code Practice Oscillator is a simple audio signal generator which is able to generate an audio tone at 750 Hz . It is actually a basic multivibrator oscillator which uses two transistors, four resistors and three capacitors.  The circuit is powered from a 9V battery and we use a “homemade” push button as the “telegraph key”. We have built our homemade “telegraph key” using a small circuit board and a small piece of elastic metal foil. Since it is a very simple circuit and there isn’t any final power amplifier stage it can not be connected to any low impedance speaker. The output of the generator can only connected to a high impedance piezoelectric transducer. If you prefer a common speaker, you must add an amplifier stage. 

Posted by: A.G

List of the comments:
No comments have been posted yet.
Vote:

Give your advice about this item:

Username:
E-mail: