Elenco Snap Circuits FM Radio reg User Manual

WARNING: Always check your wiring before

turning on a circuit. Never leave a circuit
unattended while the batteries are installed.
Never connect additional batteries or any other
power sources to your circuits.

FM Radio

Model SCP-02

WARNING: SHOCK HAZARD -

Never connect Snap Circuits
to the electrical outlets in your

ome in any way!

h

PPrroojjeecctt ##11 FFMM RRaaddiioo

The Snap Circuits Kit uses electronic blocks that snap onto a clear plastic base grid to build different

. These blocks have different colors and numbers on them so that you can easily identify them.

circuits
Build the circuit shown by placing all the parts with a black 1 next to them on the clear plastic base grid
first. Then, assemble parts marked with a 2, then parts marked with a 3, and finally, parts marked with
a 4. Install three (3) “AA”

Turn on the slide switch (S1) and press the R button on the FM module (FM). Now press the T button
and the FM module scans for a radio station. When a station is found, it locks on to it and you hear it
on the speaker (SP). Adjust the volume using the adjustable resistor (RV). The resistor controls the
amount of signal into the power amplifier (U4). Press the T button again for the next radio station. The
module will scan up to 108MHz, the end of the FM band, and stop. You must then press the R button
to reset at 88MHz again.

batteries (not included) into the battery holder (B3).

PPrroojjeecctt ##22

Modify the circuit shown by removing the 2-snap wire and the single
snap that are connected to the FM module (FM), note that the single
snap is beneath the adjustable resistor (RV).

Position the adjustable resistor (RV) at the top and turn on the slide
switch. You should be able to touch point A with your finger and hear
static. Listen closely to the speaker (SP) or wet your finger if you don’t
hear any sound. High frequency clicks, static or even an AM radio
station should be coming from speaker indicating that the amplifier is
powered on and ready to amplify signals.

The power amplifier may oscillate on its own. Do not worry, this is
normal with high-gain, high-powered amplifiers.

PPrroojjeecctt ##33

Use the circuit from project 2. When you place one finger on point A and
a finger from your other hand on the point B, what happens? If the
amplifier starts to oscillate, it is due to the fact that you just provided a
feedback path to make the amplifier into an oscillator. You may even be
able to change the pitch of the oscillation by pressing harder on the
snaps.

This is the principle used to make an electronic kazoo. If you practice
and learn the amount of pressure required to make each note, you may
even be able to play a few songs.

PPrroojjeecctt ##44

Use the circuit from project 3.

Turn on the slide switch (S1) and place one finger on point C and a
finger from your other hand on point B. The trombone should start
playing due to the fact that you just provided a feedback path to make
the amplifier into an oscillator. To change the pitch of the sound, simply
slide the adjustable resistor (RV) control back and forth. By moving the
slider, you will be able to pla
makes music. The RV control is the same as a trombone slider bar. The
circuit may be silent at some positions of the resistor control.

Power Amplifier

Electronic Kazoo

Trombone

y a song much like a trombone player

If y

ou ha

ve an

y pr

ob

lems,

contact Elenco

®

Copyright © 2005 Elenco®Electronics, Inc. All Rights Reserved. • 150 Carpenter Ave. • Wheeling, IL 60090

[phone] Fax: [phone] • e-mail: [e-mail] • Web site: www.elenco.com or www.snapcircuits.net

753141

REV-A

OTHER SNAP CIRCUITS PRODUCTS!

PARTS LIST

Contact Elenco®to find out where you can purchase these products.

Snap Circuits Jr. Model SC-100

Build over 100 projects, contains over 30 parts.

Snap Circuits Model SC-300

Build over 300 projects, contains over 60 parts.

Qty. ID Name Part #

r 1 Base grid 6SCBGM
r 4 1 1-snap wire 6SC01
r 5 2 2-snap wire 6SC02
r 2 3 3-snap wire 6SC03
r 1 B3 Battery holder 6SCB3
r 1 FM FM module 6SCFM
r 1RV

Adjustable resistor

6SCRV

r 1 S1 Slide switch 6SCS1
r 1 SP Speaker 6SCSP
r 1 U4 Power amp IC 6SCU4

Important: If any parts are missing or
damaged, DO NOT RETURN TO RETAILER.
Call toll-free [phone] or e-mail us at:
[e-mail].
Customer Service • 150 Carpenter Ave. •
Wheeling, IL 60090 U.S.A.

You may order additional / replacement parts
at our web site: www.snapcircuits.net

Snap Circuits Pro

Model SC-500

Build over 500 projects, contains over 75 parts.

Musical Recor

Model SCP-01

der

Motion Detector

Model SCP-03

Build over 750 projects, contains over 80 parts, and PC interface included.

Music Box

Model SCP-04

Snap Circuits Extreme

Space Battle

Model SCP-05

Model SC-750

Flying Saucer

Model SCP-06

BATTERIES:

Use only 1.5V AA type (not included).

t batteries with correct polarity.

Inser
Non-rechargeable batteries should not
be recharged. Rechargeable batteries
should only be charged under adult
supervision, and should not be
recharged while in the product. Do not
mix alkaline, standard (carbon-zinc), or
rechargeable (nickel-cadmium)
batteries. Remove batteries when they
are used up. Do not short circuit the
battery terminals. Never throw batteries
in a fire or attempt to open its outer
casing. Batteries are harmful if
swallowed, so keep away from small
children.