Project #288, Am radio with transistors project #289, Am radio (ii) – Elenco Upgrade Kit SC100 to SC750 User Manual

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Project #288

OBJECTIVE:

To build a complete, working AM radio with

transistor output.

AM Radio with Transistors

Project #289

OBJECTIVE:

To build a complete, working AM radio.

When you close the slide switch (S1), the integrated circuit (U5) should
detect and amplify the AM radio waves. The signal is then amplified
using the power amplifier (U4), which drives the speaker (SP). Tune
the variable capacitor (CV) to the desirable station.

AM Radio (II)

When you turn on the slide switch (S1), the integrated circuit (U5)
should amplify and detect the AM radio waves. Tune the variable
capacitor (CV) to the desirable station. Set the adjustable resistor (RV)
for the best sound. The two transistors (Q1 & Q2) drive the speaker
(SP) to complete the radio. The radio will not be very loud.