Please enable JavaScript.
Coggle requires JavaScript to display documents.
Class A Amplifier Circuit - Coggle Diagram
Class A Amplifier Circuit
DC Biasing Network
Voltage Divider circuit to set the op-amp's input bias
Reference voltage at the non-inverting input
Resistors R3(200k Ohm) and R4(200k Ohm)
Input Stage
AC Coupling capacitor C1(0.47 uF)
Input Resistor R1(10k Ohm)
Input a Signal Source(1kHz with 30 mV peak)
Op-Amp Stage
Gain Control
R2(100k Ohm) as the feedback resistor
R1(10k Ohm) as the input resistor
Voltage Gain= 1+(R2/R1). In this case the gain is 11
Single-supply operation
Output Stage
Coupling Capacitor C2(4.7 uF)
Blocks DC, allowing only Ac signal to pass through
Load Resistor R5(1k Ohm)
Affects the signal strength and power dissipation
Test the output on the right pin of the C2 capacitor on the breadboard with an oscilloscope
Performance Considerations
Frequency Response
Dependent on either C1 or C2
Power Dissipation
LM358 Amplifier dissipates low power, but can still overheat