Capacity of 12V 100mA or more
Standard of connection plug
Outer diameter 5.5mm
inner diameter 2.1mm
Center positive polarity
Please use the AC adapter fit.
CMOS analog switch
3 piece 74HC4066 used
2-channel 3-input 1-output
Audio Line Selector
Microcomputer senses
the switch,change channel.
Separate board is Lch input part.
Assembly instructions and parts set of Kd-30
CMOS analog switch,Transistor Microcomputer,
Photo coupler,Operational amplifier,
LED Three-terminal regulator
Please experience the various semiconductor.