This kit will teach you how amplifiers take a small signal and amplify it to drive two small speakers or headphones. It is based on two LM386 ICs and one LM1458 IC. The LM386 chip is not a toy, for it is designed to be used in a variety of consumer electronics applications like AM/FM radio amplifiers, portable tape or CD players, intercoms, TV sound systes, and more.
The kit provides up to 1 watt of low-distortion audio power. Harmonic distortion is 0.2% with a voltage gain up to 46dB. You supply the speakers/headset and input power source.
Output Power: 1 Watt
Power Requirement: +7 to +15 VDC, well filtered and regulated.
PC Board size: 2.25" x 2.75"
NOTE: The 9V battery snap shown in the image above is not included. Input power must be well-filtered and regulated and should be between +7 and +15 VDC, but +9V DC is recommended, especially if you are using this with other kits from Rainbowkits.
1K ohm resistor (brown, black, red)
10K ohm resistor (brown, black, orange) (use with mic only)
51K ohm resistor (green, brown, orange)
100K ohm resistor (brown, black, yellow)
270 ohm resistor (red, violet, brown)
10K or 5K trim pot (horizontal)
4.7µF or 10µF capacitor
C7, C8, C11, C12
Optional capacitors (see text) (customer supplied)