The sound emitted by the headset is small, but put into the ear to listen to the sound is very large, so it is very practical for people with certain hearing impairments
The kit consists of a microphone, a preamplifier, a power amplifier circuit and a headphone jack, and is characterized by high sensitivity in sound reception.
Simple and low-cost, but also an ideal basic kit for learning analog circuits.
Kit can be used for basic electronic technology and skills teaching practical training, electronic skills teaching, electronic technology teaching, digital circuit teaching, electronic enthusiasts, beginners training to enhance the overall practical ability to use!
Welding and component installation is the key to success, please use high-quality solder, solder joints should be bright without false welding leakage welding, components do not install the wrong, in the production of follow a certain order, after installing a part of the components and then install another part. First from the short components to start installing, such as resistors, and then install the high components.
1、Installation of resistors: resistors are not divided into positive and negative poles
2、Installation of ceramic tile electric mustard: ceramic tile capacitor does not have positive and negative poles
3、Installation of battery shrapnel, pay attention to the shrapnel opening facing outward (so as to be able to load the battery), the battery is the last installation
4、Installation of headphone holder, installation of toggle switch (toggle switch does not need to sub-direction)
5, install the electrolytic capacitor, electrolytic capacitor long foot is positive pole
6、Install the 104 potentiometer, transistor
7, the installation of electret microphone, connected to the shell of the pin is the negative pole
After installation, check again whether the components are not installed incorrectly, whether the welding is good, and then loaded into the battery, the positive pole of the battery is facing up, insert the headphones, turn the switch on, while adjusting the potentiometer while listening to the sound.
1 x Kit (with or without battery optional
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