Implementing An Ultralow-power Thermostat With Slope A/d Conversion

One advantage of these two units is that the sensor can be placed away from the heater, allowing it to sense the actual room temperature rather than the direct heat from the heater. These units can also be used...

The circuit is designed to provide several constant current outputs to the load resistor RL. The first RL is floating and is rarely utilized. The second RL serves as a virtual ground and is not commonly used either. The...

Direct Conversion Receiver: making friends with the Signetics SA602 IC. Introduction: How simple can it be? If you are a minimalist and like to work with small electronics projects, then you should become acquainted with the SA602 chip. The...

The analog to digital converter (ADC) is commonly required in most of the projects. Analog voltage measurement can be done using the ADC hardware built in together in a PIC. The picture below shows a simple setup for measuring...

The RF signal is divided into two signals that are shifted 90 degrees out of phase (one at plus 45 degrees and one at minus 45 degrees). Both signals are then mixed to audio frequencies. The two audio signals...

The schematic for the crystal bandpass filter/amplifier board is illustrated, along with images of the assembled and boxed unit. The signal frequency bandpass filter is constructed over a ground plane and enclosed in a separate housing measuring 75 x...