Darlington Connected Output Transistors

Darlington Connected Output Transistors: High-power transistors usually have low current gains, so relatively large base currents must flow into Q2 and Q3 to supply a high load current. This means…

Continue Reading Darlington Connected Output Transistors

Capacitor Coupled Class AB Output Stage

Capacitor Coupled Class AB Output Stage: The basic circuit of a Class-AB amplifier using a complementary emitter follower output stage and a Capacitor Coupled Class AB Output Stage load is…

Continue Reading Capacitor Coupled Class AB Output Stage

IC Controller for Switching Regulators

IC Controller for Switching Regulators: The functional block diagram of a MC34063 integrated circuit controller is shown in Fig. 17-38. This IC is designed to be used as a variable…

Continue Reading IC Controller for Switching Regulators

Step Down Converter

Step Down Converter: A step-down switching regulator, or Step Down Converter (also termed a buck converter), produces a dc output voltage lower than its input voltage. The basic circuit arrangement…

Continue Reading Step Down Converter

Op Amp Voltage Regulators

Op Amp Voltage Regulators: Voltage Follower Regulator - Refer once again to the Op Amp Voltage Regulators circuit in Fig. 17-11. The complete error amplifier has two input terminals at…

Continue Reading Op Amp Voltage Regulators

Improving Regulator Performance

Improving Regulator Performance: Error Amplifier Gain - The performance of a regulator is dependent on the voltage gain of the error amplifier. A higher gain amplifier gives better line and…

Continue Reading Improving Regulator Performance

Oscillator Amplitude Stabilization Circuit

Oscillator Amplitude Stabilization Circuit: Output Amplitude - For all of the Oscillator Amplitude Stabilization Circuit discussed, the output voltage amplitude is determined by the amplifier maximum output swing. The output…

Continue Reading Oscillator Amplitude Stabilization Circuit

Schmitt Trigger Circuit Diagram

Schmitt Trigger Circuit Diagram: Inverting Schmitt Trigger - A Schmitt Trigger Circuit Diagram is a fast-operating voltage level detector. When the input voltage arrives at a level determined by the…

Continue Reading Schmitt Trigger Circuit Diagram