This application note describes a technique for auto-ranging a battery operated DVM suitable for panel meter applications. Also, circuit ideas will be presented for conductance and resistance measurement, 9V battery and 5V supply operations, and current measurement. The control signals necessary for auto-ranging are over-range, under-range, and clock. The over-range and under-range inputs control the direction of a scale shift, becoming active ....
on: 9/25/2019
Here is a Simple Voltage and Current Regulated Power Supply using the LM723 IC. With the Values Shown, It is Adjustable from 3 to 30 Volts and 0 to 3 Amps. This circuit does NOT have Output SHORT CIRCUIT Protection, So a 3 Amp Fuse on the Output would be a Good Idea. Ideally you will put an Amp-Meter,
on: 8/7/2019
It is important to understand the difference between accuracy and precision. Using the simple analogy of a game of darts, accuracy is consistently hitting the true mark, or bull’s-eye. Precision is consistency, but not necessarily accurate consistency. This fact sheet provides information on the types, use, and calibration of temperature measuring devices.
on: 8/5/2019
Microwave networks are harder to analyze than their lower-frequency counterparts. The reason is that the size of a typical microwave circuit is comparable the wavelength, so phase variation along a portion of the circuit cannot be ignored as is the case at lower frequencies.
on: 7/28/2019
The purpose of this application note is to describe the operation and potential pitfalls of a 10V resolution (VREF = 100mV) 4 1/2 digit autoranging scheme using the ICL7103A/ICL8052A pair. Two auto-ranging circuits are included within the text.
on: 7/23/2019
Popular Electronics was created in 1954 by Ziff-Davis Publishing for an audience of electronics hobbyists and experimenters. It soon became the “World’s Largest-Selling Electronics Magazine”. he circulation was 240,000 by 1957 and exceeded 400,000 by 1963. Rival “Electronics World” was merged into “Popular Electronics” in 1972.
on: 7/19/2019
