Mono Crystal Radio Amplifier and attached Speaker, Cable and 9 Volt Battery Clip

Description

Mono Crystal Radio Amplifier with Speaker, Cable and 9 Volt Battery Clip
Allows you to use a audio
amplifier
with your Crystal Radio
For Crystal Radio use: Connect the Radio Audio Output to the Input Terminals of the Amplifier
Does not include a enclosure or 9 Volt Battery
Caution: R
epetitive
flexing
of the wires can
damage any
wire
and
cable
systems.
I
t is a good practice to enclose the Amplifier and speaker inside a project box to minimize flexing of the wires as repeated flexing and bending of the wires will cause pre-mature breaking of the wires.
The amp is really easy to use, just hook up a 9volt battery and plug the cord into the radio.
The volume can be adjusted to your preference but if you go too loud, it may crackle the audio.
It has a small white potentiometer on it that you can turn up or down to change the volume.
When you have Power, an LED on the amp board will light up. It will drain the battery overnight if you don't cut power.
Since it does not have a power switch so the easiest way to cut power is to remove the battery or disconnect the terminal block that has 4 wires running to it.
If you disconnect the terminal block, be careful to observe orientation when plugging it back in - it is not polarized...When you rec-connect it, make sure the red wire goes to the amp terminal marked VCC on the pc board.
You can easily mount the amp in a plastic or wood enclosure.
BOARD CONNECTION DETAILS ARE SHOWN IN THE PHOTO GALLERY
Package Includes:
1 piece fully assembled Amplifier Board with speaker and cables attached
Perfect for Crystal Radio
Wide Operating Voltage Range: 5-12V
With power indicator LED
Includes Attached Input Jack and attached 9volt battery Power Clip
Package Contents:= 1 Amplifier Board with cables and speaker
10K variable potentiometer so, you can adjust the Amplification Volume
PCB Board Size : 41 x 14mm(L*W)
Very little distortion
28mm diameter 2 Watt 8 Ohm speaker attached
This Amplifier Does Not have any Output Overdrive Protection.
If you set the volume level so it blasts or too high, the Amplifier chip will blow.
Simply Adjust the volume level at a comfortable level where you are using it.