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Description
This circuit is tailor-made according to the characteristics of KT0837. The circuit selection and volume are controlled in both directions. In addition, the power supply is directly connected to the power supply terminal (pin 1) of the chip, and the switch on pin 10 is used to control the standby state. When in standby, the circuit consumes only a few microamperes and has a radio memory function. That is, when the IC works again, it will stop at the frequency it received last time. It shows that this circuit is not suitable for speaker playback, and is most suitable for headphones, because the headphone cable can be used as an antenna.
Specification
Voltage:DC3V
Board size:35mm x 53mm
Component nameQuantityComponent nameQuantity
Resistance 10K1At the touch of a button4
Color ring inductor 1uH2Crystal 32.768K1
Ceramic capacitor 20pF13F07 Headphone Holder1
Ceramic capacitor 1011switch1
Ceramic capacitor 1041Battery box1
Electrolytic capacitor 33uF1PCB board1
Package includes
1 x Training Welding Parts
Additional information
| Weight | 0.039 kg |
|---|
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