The LM317 linear integrated stabilizer circuit with adjustable output voltage was developed by the author of the first monolithic three-terminal stabilizers, R. Widlar, almost 50 years ago. The microcircuit turned out to be so successful that it is being produced without changes.

The LM317 is more suitable than ever for the design of simple, adjustable power sources and electronic equipment with a variety of output characteristics, both adjustable output voltage and preset load voltage and current. For relief

A charger for car batteries is an irreplaceable thing that every car enthusiast should have, no matter how good the battery is, since it can fail at the most inconvenient moment. Designs of numerous zar

Entertaining experiments: some possibilities of a field-effect transistor Radio magazine, number 11, 1998. It is known that the input resistance of a bipolar transistor depends on the load resistance of the cascade, the resistance of the resistor in the emitter circuit and the coefficient

Integral stabilizers in this series are convenient to use in many other applications. I want to show you some of its non-standard uses. Due to the fact that these stabilizers have terminal potentials that “float” relative to ground, they

The most important power parameter for any LED is current. When connecting an LED to a car, the required current can be set using a resistor. In this case, the resistor is calculated based on the maximum voltage of the on-board network (14.5V). Negative

3411 The presence of air suspension in a car provides smoother and easier control compared to shock absorbers, however, in order to install air suspension with your own hands, you need to know how the damping system in a car works and its principle

Very often conflicts cannot be resolved by the participants themselves. In this case, the help of a third party is needed, taking a neutral, objective position in relation to all parties to the conflict. The term “third party” is broad and collective

It has been shown that when using an operational amplifier in various switching circuits, the gain of a stage on a single operational amplifier (op-amp) depends only on the feedback depth. Therefore, formulas for determining the gain of a specific circuit do not use

A rotary piston engine or Wankel engine is a motor where the main working element is planetary circular motion. This is a fundamentally different type of engine, different from its piston counterparts in the internal combustion engine family. In design