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Simple Audio amplifier Using Transistors

Construct a basic audio amplifier utilizing transistors. While integrated circuit (IC) designs are available for this purpose, the intention is to use transistors to gain practical knowledge about their amplification capabilities. The article "Amplifier Basics - How Amps Work (Intro)"...

200W MOSFET Power Amplifier Schematic Diagram

This circuit utilizes a MOSFET amplifier as the primary component for boosting audio signals. It is designed to drive a speaker with an impedance of 8 Ohms and a power output exceeding 200W. Additionally, a suitable power supply circuit is...

H2 PWM Generators

The Generator cell must have reasonable surface area on the Plates to generate a reasonable amount of Hydrogen/Oxygen. And a Typical construction would use Stainless Steel for the Electrodes to prevent them from being Quickly eaten away. More: DANGER: Hydrogen...

3 to 12 volts step up DC converter using MAX668

3 to 12 volts step-up DC converter using MAX668 integrated circuit design The circuit described is a step-up (boost) DC-DC converter designed to convert an input voltage in the range of 3 to 12 volts into a higher output voltage. The...

Undervoltage lockout for small-power MOSFET gate driver

A battery switch-over circuit is being developed, consisting of two parallel lanes as depicted in the circuit diagram. The operational voltage range spans from 3V to 12V. Only one lane should be active at any given time, which is controlled...

Fundamentals of Transistor Oscillators

This chapter discusses the operation and circuitry of transistor oscillators, which can be categorized into two types: feedback (similar to vacuum tube oscillators) and negative-resistance (current multiplying). Transistor oscillators can generate sine waves using various operational modes, including some novel...

Motor Speed Control Using PWM

Pulse width modulation, commonly referred to as PWM, is utilized to regulate the power supplied to a load without sacrificing efficiency. This technique is often employed in controlling the speed of an electric motor. PWM operates by varying the width of...

Internal functional block diagram of NCP5201

The NCP5201 chip contains two sets of PWM signal generating circuits, each with a dedicated set of output pins. These circuits produce two opposite phase PWM signals, which are applied to the gates of three field effect transistors. This arrangement...

Step-up-down-dc-dc-converter

Positive output step-up and step-down converters have a common limitation in that neither can handle input voltages that are both greater than or less than the output. For example, when converting a 12-V sealed lead-acid battery to a regulated +12...