Open the NE555 sch.asc file using your preferred spice programme after downloading. (ex. LTSpice). All but the reset pin are included and labeled in the model. Connect the circuit like you would any ...

Often we require a squarewave signal generator with adjustable frequency, almost equal high and low output pulses and adjustable amplitudes. Here we present a simple, useful and low-cost signal ...

The NE555 is a popular IC that functions as a timer or an oscillator. It’s an 8-pin IC available in various packages. We are using an SOP-8 package of the IC. Due to the versatile functioning of the ...

This project is open source hardware under the CERN Open Hardware Licence Version 2 - Strongly Reciprocal (CERN-OHL-S v2). ⚖️Disclaimer: This synthesizer was developed as a purely educational project ...

This circuit is based on a passive infrared (PIR) sensor, which automatically switches on a device when someone comes close to it. It can be used for detection of theft or an unauthorised person ...

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 ...