.. loaded boards and boards with shorts in ground planes. Here’s how it works. Figure 1. Audible milli-ohmeter output frequency is linear versus resistance over several orders of magnitude. A 50-mA excitation current is provided to ...
.. oscillating circuits. Here’s a method that employs a single supply voltage rail to produce a buffered signal whose frequency can be varied over a range from 10 Hz to 1 MHz (Figure 1). Figure 1. The sawtooth output waveform is ...
.. that Design Idea (DI) contributor and current source circuitry expert Ashutosh Sapre discovered to be essential for frequency stability of the cascode topology. Thanks, Ashu! Figure 2. R4 and R5 trims allow post-assembly ...
.. AL17150-10B achieves excellent regulation and high-power efficiency. The characteristics of max peak current and driving frequency vary as the load changes, which can improve efficiency performance at light load and overall average ...
.. is an active-high pulse at connector P 1 . A 12-msec pulse corresponds to the minimum measurable distance; the output frequency is approximately 25 Hz. If the circuit detects no reflection, then the output at connector P 1 remains ...
.. current pulses greater than 20 mA, enough to trigger many types of TRIACs and consuming less than 1.5 mA dc. Because the frequency of pulses is approximately 700 Hz, transformer T 2 is small. Resistor R 2 limits the discharge current ...
.. regulation of the tri-wave’s amplitude at a constant 1.7 Vpp. But how does that allow V CON to control oscillation frequency? Here’s how. The slope of the tri-wave on A1’s input pin 2 is fixed at 2.5 v/(R1C2), or 340 ...
.. it can still surprise us. The circuit in Figure 1 is an example. In it a single linear pot in a simple RC network sets the frequency of 555 square wave oscillation over a greater than 10 Hz to 100 kHz range, exceeding a 10,000:1 four ...
.. module is based on the TEA5767 chip. It is a well-known module that could be controlled via the I 2 C bus. It covers the FM frequency range from 76 MHz to 108 MHz. At the output, it handles L and R stereo audio signals that should be ...
.. thermistors to your system by adding an external resistor divider. Reference Klaper, Martin, and Heinz Mathis, 2-Pound RLC Meter impedance measurement using a sound card, Elektor, June 2008, pg 64. Downloads Source code Java executable