依頼内容
“Draw a 9 V 2N5457 piezo preamp with gate bias, source resistor and bypass capacitor, drain resistor, input and output coupling capacitors, a 100 kΩ volume potentiometer, and a 10 kΩ tone potentiometer.”
次はこちらChange the input capacitor to 22 nF.Change the volume potentiometer to 250 kΩ.
この図に含まれるもの
図の背後にある意思決定を読み解く。
01
JFET common source stage for high input impedance and gain
02
Passive volume control using a voltage divider
03
Passive tone control with RC low-pass filter
When building a preamp for piezo pickups that require high input impedance (1MΩ) and variable output level.