Project 66 l/r music amplifier, Project 67 another transistor amplifier – Elenco Snap Circuits SOUND ® User Manual
Page 48
Project 66
L/R Music Amplifier
MP3 player
The left and right outputs of
your music device are intended
to control separate speakers,
but are combined here
because you only have one
Snap Circuits
®
speaker.
This circuit is similar to
project 58 (Amplified Big
Brightness Adjuster), but
the color LED will not be
quite as bright. In this circuit
both the controlling current
(through RV3) and
controlled current (through
R1) also flow through the
color LED, reducing the
amplification.
Vary the brightness of the color LED (D8) using the 500k
W
adjustable
resistor (RV3).
Build the circuit, and turn on the slide switch (S1).
Connect a music device (not included) to the audio
jack (JA) as shown, and start music on it. Use the
lever on the adjustable resistor (RV) to adjust the
volume for the left and right outputs of your music
device; both won’t be loud at the same time.
Project 67
Another Transistor Amplifier
-47-
- Upgrade Kit SC100 to SC300 (76 pages)
- Snap Circuits Jr.® Educational 100 Exp. (48 pages)
- Upgrade Kit SC300 to SC500 (64 pages)
- Snap Rover ® (24 pages)
- XP&trade (64 pages)
- Snap Circuits LIGHT ® (84 pages)
- Snap Circuits Extreme® Educational 750 Exp. (88 pages)
- Projects PC1-PC73 (60 pages)
- Electronics 202 (132 pages)
- Snaptricity® (92 pages)
- Upgrade Kit SCROV10 to SCROV50 (48 pages)
- Snap Circuits Green ® (80 pages)
- C Adapter for Snap Circuits® (2 pages)
- Motion Detector Kit (20 pages)
- Digital Roulette Kit (16 pages)
- FM Wireless Microphone Kit (12 pages)
- AM Radio Kit (32 pages)
- AM Radio Kit (36 pages)
- AM/FM Radio Kit (64 pages)
- Circuit Maker Skill Builder 125 (64 pages)
- Circuit Maker Sound Plus 200 (80 pages)
- Understanding Logic Gates (16 pages)
- Understanding Logic Gates and Circuits (42 pages)
- Tumbling Robot (12 pages)
- Solar Energy (16 pages)
- C2D Scope (16 pages)
- 288x Astrolon Telescope with Aluminum Tripod (1 page)
- Simulated Frog Dissection Kit (1 page)
- Talking Galaxy Planetarium with Night Light (1 page)
- Night’n Day® (10 pages)
- Radio Controlled Black Widow (1 page)
- Handheld Microscope (2 pages)
- Water Filtration Kit (8 pages)
- 6-in-1 Solar Kit (18 pages)
- Microscope Set in Carrying Case (1 page)
- Mobile 20 Telescope (1 page)
- Mechanical Drum (20 pages)
- Aerial Screw (20 pages)
- Swing Bridge (20 pages)
- Printing Press (24 pages)
- MultiBarrel Cannon (20 pages)
- Armored Car (24 pages)
- Paddleboat (20 pages)
- SelfPropelled Cart (20 pages)
- Catapult (24 pages)