Amp
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Flasher Circuits
The basic two-transistor flasher has become widely utilized in various applications due to its simplicity and versatility. It has been employed in circuits such as a micropower low battery indicator, a lightning detector, an off-line switching power supply, a micropower...
Single op amp oscillator
This circuit incorporates a Schmitt trigger and an integrator configured around a single operational amplifier (op-amp). The timing is regulated by an RC network. The voltage at the inverting input tracks the exponential charging of the capacitor within defined upper...
Amplifier circuit
An amplifier is a device that accepts a varying input signal and produces an output signal that varies in the same way as the input but has a larger amplitude. The input signal may be a current, voltage, mechanical motion,...
Transistor Circuits
It had been a little over a decade since the invention of the transistor when this article appeared in the August 1959 edition of Popular Electronics. Transistors were still a mystery to many, including engineers, technicians, and hobbyists. Author James...
Transistor Turns Op Amp On Or Off
When transistor Q1 is switched off, the circuit operates as a voltage follower. By applying a positive voltage to the emitter of Q1 through a 10 kΩ resistor, the transistor is activated and enters saturation. Consequently, the lower end of...
45 Watt Class-B Audio Power Amplifier
The goals were achieved by utilizing a discrete-component operational amplifier (op-amp) driving a bipolar junction transistor (BJT) complementary common-emitter output stage configured for Class B operation. In this configuration, the output transistors remain off for small output currents, allowing the...
Mini Audio Amplifier
This is a low watt audio amplifier with a different technique in design. The 1.8K resistor has been connected to output of the circuit instead of VCC line. The output power of the circuit is about 250mW on an 8...
Transistor phase shift oscillator. RC phase shift network and RC phase shift oscillator using opap
Transistor RC phase shift oscillator. RC phase shift oscillator using operational amplifier. RC phase shift network. Theory and working principle. Circuit diagram.
The transistor RC phase shift oscillator is a type of electronic oscillator that generates sine wave signals. This oscillator...
Inverting Summing Amplifier Circuit
The output of Ul is the sum of Vv, multiplied by the ratio of Rx to Rv, RJRV, and respectively. Resistors R1, R2, and R3 are selected as required for individual gains. Additionally, R4 influences the gain of all these...