Various designs for current mirror circuits have been an active topic recently here in Design Ideas. Usually, the mirror designer’s aim is to make the mirror’s input and output currents accurately equal, but Figure 1 shows one that takes a tangent...
Articles and news - 3
Combine two TL431 regulators to make versatile current mirror
FM receiver/radio using Arduino and TEA5767
The schematic diagram of the device. As it is clear, the circuit consists of 3 main parts: Arduino-Nano (Controller), FM receiver module, and the audio amplifier...
Ignoring the regulator's reference redux
Stephen Woodward’s “Ignoring the regulator’s reference” Design Ideas is an excellent, working example of how to include a circuit in the feedback loop of an op amp to support the stabilization of the circuit’s operating point...
Nuvoton releases compact high-power violet laser diode (402 nm, 1.7 W)
Nuvoton Technology announced the launch of its compact high-power violet laser diode KLC435FS01WW (402 nm, 1.7 W) which achieves industry-leading optical output power in the industry-standard TO-56 CAN package...
Allegro sets new standard for efficiency in high-power systems with ultra-low-loss isolated current sensor
Allegro MicroSystems announced the ACS37200, a galvanically isolated current sensor that provides a breakthrough solution to the efficiency and power density challenges in high-current applications...
Extend the LM358 op-amp family's output voltage range
The LM358 family of dual op amps is among those hoary industry work-horse devices that are inexpensive and still have their uses. These parts’ outputs can approach (and for the inputs even include) their negative supply rail voltage. Unfortunately, this is not the case for the positive supply rail...
SCR topology transmogrifies into BJT two-wire precision current source
Recently, frequent Design Idea author Christopher Paul showcased an innovative and high performance true-two-wire current source using a depletion mode MOSFET as the pass device...
Ultra-low VCE(sat) NPN and PNP bipolar transistors from Diodes Incorporated maximize power density and efficiency in compact automotive designs
Diodes Incorporated announces an expansion of its automotive-compliant bipolar transistor portfolio with the introduction of the DXTN/P 78Q & 80Q series...
Simple speedy single-slope ADC
Ages ago, humankind crawled out of the primordial analog ooze and began to do digital. They soon noticed and quantified a fundamental need to interconnect their new quantized numerical novelties with the classic continuum of the ancestral engineer’s world. Thus arose the ADC...
Read isolated digital signals without power drain
Electronic systems must often isolate their inputs or outputs from the main reference common (ground). Various conditions can make necessary such galvanic isolation: the type of input sensor or driven actuator...