At the end of the DI for a Simple log-scale audio meter I promised to show how to upgrade it to work better...
Articles and news - 3
Supersized log-scale audio meter
High-power LED drivers require no external switches
As the latest generation of new LEDs achieves higher levels of power and efficiency, use of these devices extends to new areas, such as flashlights and vehicular applications...
Keep the heat down in power op amps
When you include a power op amp, such as PA05 from Apex Microtechnology, in your design, it is desirable to minimize the supply-to-output differential to a minimum to reduce power dissipation and to fully exploit the amplifier's output range...
Creating a very fast edge rate generator for testing (or taking the pulse of your scope)
I recently purchased a new oscilloscope for home use. It’s a 250 MHz scope, but I was curious what the actual –3 dB frequency was as most scopes have a bit more upper end margin than their published rating...
Multiturn position sensor provides true power-on capabilities with zero power
This article outlines the current methods used to enable true power-on (TPO) multiturn sensing capabilities and introduces a new simplified solution that is set to reshape both the industrial and automotive position sensing markets...
Efficient voltage doubler is made from generic CMOS inverters
When a design needs auxiliary voltage rails and the associated current loads are modest, capacitor pump voltage multipliers are often the simplest, cheapest, and most efficient way to make them...
Voltage inverter uses gate's output pins as inputs and its ground pin as output
When analog circuits mix with digital, the former are sometimes dissatisfied with the latter’s usual single supply rail. This creates a need for additional, often negative polarity, voltage sources that are commonly provided by capacitive charge pumps...
First GaN FET with 1 milliohms on-resistance announced by EPC
EPC introduces the 100 V, 1 mOhm EPC2361 GaN FET in compact 3 mm × 5 mm QFN package, offering higher power density for DC-DC conversion...
Logic Probe has a wide voltage range
The logic probe is powered from the device under test – it may be any binary logic, which can be powered in the range +2 V to +6 V...
∆Vbe differential thermometer needs no calibration
Differential temperature measurement is a handy way to quantify the performance of heatsinks, thermoelectric coolers, and thermal control in electronic assemblies. Figure illustrates an inexpensive design for a high-resolution differential thermometer utilizing the ∆VBE effect to make accurate measurements with ordinary uncalibrated transistors as precision temperature sensors...
