- January 3, 2017 at 11:27 am #8526
Still looking for a easy-to-built CPO? This kt is the answer to your needs! Before you know it you will be up to 20 Words per minute!
<b>The Super Simple CPO is a two-transistor astable multivibrator circuit. It is designed for young people, groups, and those new to electronics, soldering, and kit building. It is very easy to build, the parts are wide spaced on the pc board, minimal parts count, and only two resistor values and one capacitor value. It features capacitors with axial leads, and rugged TO-18 transistors, so that all parts mount flush, or close to flush, to the pc board surface. This ruggedizes the assembly and prevents the tempation to wiggle parts and possibly breaking leads.</b>
<b>The speaker mounts to the underside of the board, with adhesive rubber feet providing clearance. Printed on the bottom of the board are the component color codes and the Morse code characters. The part location is printed on the top.</b>
<b>Rugged metal clips hold the 9v battery in place – no flimsy wire connectors here! The whole circuit with battery, speaker and key is contained on the board. Once the soldering is finished it’s ready to try out.</b>
<b>Good quality components and thoughtful design ensure long term success and survival. It will not be a throw-away item that gets broken as soon as it is taken home.</b>
<b>Boy Scouts have built a breadboard (literally a pine plank) version of this for many years as an Electronics Merit Badge project. For them, it goes together in about an hour. 4-H groups have successfully built it also. The frequency of the oscillator is about 700 Hz and isn’t piercingly loud or “buzzy”. Mom and Dad shouldn’t become annoyed and hide it from the kids.</b>
<b>This is an excellent group project and a quantity discount and combined shipping are available, 5 piece minimum order pse.</b>
<b> <u>Specifications and Design Features</u>
Self Contained: All parts on one board including key and battery.
Simple: Only 4 resistors, 2 transistors, 2 capacitors, speaker and key.
Rugged: TO-18 metal case transistors. All parts mounted flush to PC board.
Reliable: Classic two transistor multivibrator circuit, reliable and sounds good.</b>
NO KEY NEEDED!
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