One of [NE555]’s boards from the 90s. Over on twitter [NE555] has been posting beautiful SMD prototypes. Back in the 90s when surface mount components gained widespread adoption, the quick and cheap ...

The bipolar NE555 timer IC is widely used in inductorless dc-dc converters, most frequently in doubling and inverting converters. However, another very popular IC, the LM386 audio amplifier, may be a ...

We’ll start with my power supply. It’s a 143D two amp bench supply from Southwest Technical Products Corporation [8]. It came as a kit, and I built it around 1968. Although admittedly the caps are ...

Ultrasonic levitation — the practice of creating a standing wave between two ultrasonic sources and positioning lightweight objects such that they can float in the pressure minimums between them — has ...

This is a project circuit in which we use PWM to dim the intensity of light of the LED. The Pulse Width Modulation (PWM) plays an important role in controlling the circuits. If you want to control the ...

The venerable 555-type timer makes an effective driver for power MOSFETs, but you have to understand the drive situation when selecting the correct variation of the basic timer. This idea shows how ...