Electronics design ideas 2019

Innovation is critical in today’s engineering world and it demands technical knowledge and the highest level of creativity. Seeing compact articles that solve design problems or display innovative ways to accomplish design tasks can help to fuel your electronics creativity.

You can find many very circuit ideas at ePanorama.net circuits page.

In addition to this links to interesting electronics design related articles worth to check out can be posted to the comments section.






  1. Tomi Engdahl says:

    Selenium rectifiers – the smelliest components ever

    You’ll still find lots of these in old equipment. Sometimes you’ll smell them too, and if one blows up while you’re working in the panel the vile smell will make you leave the area fast.

  2. Tomi Engdahl says:

    1962 “TROUBLESHOOTING TRANSISTOR CIRCUITS” Technical Training, Vintage Electronics Equipment in HD

    Vintage Electronics: 1962 Technology: “TRANSISTORS” a very high quality training film explaining the functions of transistors, circuits, testing methods and skills to be learned. Well paced, exceptionally good quality (HD) and lots of vintage equipment. Explains the differences between vacuum tube circuit testing and transistor circuit testing.

  3. Tomi Engdahl says:

    Ultralow Noise Tester: 9V Battery vs. 7805 vs. LTZ1000

  4. Tomi Engdahl says:


    Concerning opamp.power supply, is there any difference when using +-12 , 14, 15 and 17 Vdc respectively.

    Higher supply voltage= more headroom. For me +/-15vDC always.

    For audio lower voltage restricts the dynamic range / headroom. Check the op amp data sheets for devices you are using for maximum permissible rail voltage.

    I agree with Nick above. Additionally, power consumption increases with increasing voltage, as do the short circuit losses, which may overheat the chip in case of a short circuit at the output.

  5. Tomi Engdahl says:

    Simple Class A Amplifier
    A 10-W Design giving subjectively better results than class B transistor amplifiers
    by J. L. Linsley Hood, M.I.E.E.

    Class A Amplifier
    Common emitter amplifiers are the most commonly used type of amplifier as they can have a very large voltage gain

  6. Tomi Engdahl says:

    Class A MOSFET amplifier using one transistor – with schematic

    Very simple amplifier circuit. Best used on a regulated or active filter type (capacitor multiplier) supply.

  7. Tomi Engdahl says:

    Op Amps Shrug Off Automotive, Industrial, Other EMI
    Sept. 14, 2021
    These rail-to-rail CMOS op amps are specifically designed to maintain their performance in high-EMI environments.

    Along with temperature extremes, electromagnetic interference (EMI) is a pervasive issue in automotive, industrial, and even medical environments as it can stimulate noise-induced errors, disrupt circuit performance, and even induce gross malfunction. While there are techniques to attenuate EMI and mitigate its effects, these usually require addition of components such as shielding, ferrite beads, filtering, bypassing, and more, all of which raise cost and real-estate requirements as well as design and qualification uncertainty.

    Recognizing this situation, ROHM introduced its EMARMOUR series in 2017, which provides superior noise immunity by combining a vertically integrated production system with proprietary analog design technology. Components in this series are designed to prevent malfunctions due to noise and do so without the need for special EMI-mitigation measures. The goal is to simplify up-front modeling and design, and reduce debug time and time to market.

    The latest entries in this family are the BD8758xY series of rail-to-rail input/output high-speed CMOS op amps with enhanced EMI immunity. These op amps target applications requiring high-speed sensing in harsh environments, such as vehicle engine control units (ECUs) and anomaly detection systems for factory automation equipment.

  8. Tomi Engdahl says:

    A new class of logic gates offers robust characteristics, low power consumption, and the ability to run on a very wide range of supply voltages.
    Learn more: http://arw.li/6184yCmJ4
    #EDN #RFL #PowerConsumption

    RFL-class logic gates

    This Design Idea describes a new class of logic gates, which we have named resistor-FET-logic, aka “RFL.” How do we know it is new? While FET switches are common today, we have been unable to find a similar resistor-FET-logic. Further, RTL (resistor-transistor-logic) is defined today as resistor-BJT-logic. BJTs are still de rigueur when discussing transistorized designs, which would not be the case if RFL were a known concept.

    How could an entire class of logic gates be overlooked? In the 1960s, things moved quickly from RTL (1961) to DTL (1962) then TTL (1963). While RFL could have been invented from about 1960, it was curiously passed over. RFL would fit the line-up of the more familiar logic classes as follows: DL, RTL, RFL, DTL, TTL, and CMOS. It is not to be confused with NMOS logic, which typically requires two or three times as many FETs to implement an equivalent function.

    RFL offers several significant advantages over RTL, and in some cases over CMOS as well. An obvious advantage is that it consumes much less power than RTL (and with that, less space). In addition, the FET core makes it easier to design with than RTL. In addition, RFL can be customized to work with a wide range of supply voltages, input voltages, output currents, and so on.


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