Colpitts Crystal Oscillator Kit (#1720)
This kit consists of a one-transistor Colpitts Crystal Oscillator and a one-transistor, emitter-follower output buffer/amplifier. You get all the parts you see, including the PCB, plus a schematic and several different crystals to experiment with. It runs off of a 9-volt battery which is not included. This oscillator can deliver up to a 3-volt signal into 100 Ohms: the higher the frequency, the lower the output amplitude. It has been tested with crystals from 3MHz to 70MHz.
This kit is also offered with a "Built & Tested" option for those that do not want to build the kit themselves.
The PCB is approx 1.1" x 2.0", .062" thick, FR-4 with plated Thru-Holes. You not only get to build this great circuit, but it can also be used as a building block for home-made receivers and transmitters. This can also be used as a crystal tester by plugging in crystals instead of soldering them in.
Below is a detailed introduction to component identification and kit assembly.
The kit includes the following:
|PCB||Colpitts Oscillator PCB, NightFire||1 ea|
|Schematic||Colpitts Oscillator Drawing, NightFire||1 ea|
|Transistor||2N3904, NPN, Amplifier, TO-92||2 ea|
|Resistor||100 Ohms, 1/4 Watt, Carbon Film||2 ea|
|Resistor||1.0K, 1/4 Watt, Carbon Film||2 ea|
|Resistor||100K, 1/4 Watt, Carbon Film||1 ea|
|Capacitor||18pF, NPO, Ceramic||1 ea|
|Capacitor||330pF, NPO, Ceramic||1 ea|
|Capacitor||.01uF, X7R, Ceramic||2 ea|
|Crystal||8.000 MHz, HC-49/U||1 ea|
|Crystal||13.50000 MHz, AT-51||1 ea|
|Battery Clip||9-Volt, Snap-type, 2 Wires, 4" long||1 ea|
|Socket Pin||Crystal Holder||2 ea|