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.
1,998 Comments
Tomi Engdahl says:
https://pestfree.com.au/pages/electromagnetic-vs-ultrasonic
Tomi Engdahl says:
https://www.elektronik2000.com/
Tomi Engdahl says:
https://www.elektormagazine.com/news/circuit-two-terminal-dimmer?fbclid=Iwb21leAOP7VRjbGNrA4_tUWV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHg8y2SnkEQuSwWCjVlhHcd2iMbzhrk_OafT-v7nY2GYxNjcFRi2dDIZQtCwI_aem_poPMPPBgOG3F7Ou83KpZ7A
Tomi Engdahl says:
https://www.circuits-diy.com/moc5010-linear-opto-isolator-circuit/#google_vignette
https://www.elektormagazine.com/magazine/elektor-198399/45342
https://www.edn.com/linear-optocoupler-circuit/
Tomi Engdahl says:
https://www.homemade-circuits.com/blinking-led-circuit-using-ldr-and-resistors/
Tomi Engdahl says:
Optocoupler on/off switch
https://youtu.be/DpFvLOSJbak?si=s9xd841zYwuyAz1P
Tomi Engdahl says:
https://www.eevblog.com/forum/beginners/passive-piezo-buzzers/
Tomi Engdahl says:
https://electronics.stackexchange.com/questions/335693/can-tvs-diodes-be-used-for-audio
https://product.tdk.com/en/techlibrary/solutionguide/ctvs01.html
Tomi Engdahl says:
Universal AC to 12V-DC, 5A (60W) Switching Power Supply
https://youtu.be/kXiPUsMfOHc?si=-QjH-ErWXtGL4-MF
Tomi Engdahl says:
https://rimstar.org/science_electronics_projects/joule_thief_powering_clock_ls.htm
Tomi Engdahl says:
https://circuitbest.com/simple-electronics-component-tester-circuit/#amp_tf=L%C3%A4hde%3A%20%251%24s&aoh=17668666642628&referrer=https%3A%2F%2Fwww.google.com&share=https%3A%2F%2Fcircuitbest.com%2Fsimple-electronics-component-tester-circuit%2F
Tomi Engdahl says:
https://www.infineon.com/gated/infineon-implementing-a-usb3-vision-video-device-using-ez-usb-fx20-fx10-fx5n_47f759b8-bf6d-4206-b593-5178c2006aeb
Tomi Engdahl says:
https://www.hackatronic.com/auto-cut-off-battery-charger-circuit/
Tomi Engdahl says:
https://www.instructables.com/How-to-Make-a-Touch-Switch-Using-One-Mosfet/
Tomi Engdahl says:
https://electronics.stackexchange.com/questions/233394/how-can-i-protect-my-mosfet
Tomi Engdahl says:
https://www.edn.com/circuit-combines-power-supply-and-audio-amplifier/
Tomi Engdahl says:
http://another-electronics.blogspot.com/2008/09/power-amplifier-using-ic-lm317.html
Tomi Engdahl says:
https://www.diyaudio.com/community/threads/elektors-lm317-class-a-amplifier.298407/
Tomi Engdahl says:
http://s2ptech.blogspot.com/2012/04/how-to-make-lm317-audio-amplifier.html
Tomi Engdahl says:
https://www.edn.com/adjust-op-amp-gain-from-30-db-to-60-db-with-one-linear-pot/
Tomi Engdahl says:
https://circuitsafari.en.aptoide.com/app
Tomi Engdahl says:
https://electronics.stackexchange.com/questions/84962/how-big-current-i-can-commutate-using-d-sub-connectors?fbclid=Iwb21leAPxeUNjbGNrA_F5H2V4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHgovVCM6aqKCPpYNVdvGLPYHTG_Ss9f_9yNgI-E8jdQf5rwu_sDarhw6Ur4y_aem_ODT9IgE66HyByiuGmhO85A
Tomi Engdahl says:
https://www.wolfspeed.com/knowledge-center/article/analyzing-transient-behavior-using-a-double-pulse-test-simulation-in-ltspice/
Tomi Engdahl says:
https://theorycircuit.com/audio/simple-single-transistor-audio-amplifier-circuit/#google_vignette
Tomi Engdahl says:
Cheap 100W amplifier
https://youtu.be/PDlvp3CFajs?si=WEeZ263QB5gtSvsB
Tomi Engdahl says:
https://www.analog.com/en/resources/design-notes/sot23-1khz-to-30mhz-oscillator-with-single-resistor-frequency-set.html
Tomi Engdahl says:
Custom DIY LCR SMD fixture for low-Z components
https://www.edn.com/custom-diy-lcr-smd-fixture-for-low-z-components/
Many folks have bench type LCR meters available and employ the usual general purpose Kelvin type clips or direct connect fixtures for most measurements. When encountering SMD components these measurement tools/methods can become difficult and frustrating for quality repeatable measurements, especially true for low Z components.
Tomi Engdahl says:
https://sdn.fi/cad/?fbclid=IwdGRjcAQk48djbGNrBCTjw2V4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHhCNlgdVUa6HUAvm5AXR0bpE2CDwRlNsa6RLKO3wDrQzt2y9VUiknd-gvtDq_aem_6fzIU5pEKfogV6v7Qo5iww
Tomi Engdahl says:
https://physicsopenlab.org/2020/06/15/alpha-detector-with-bpx61-photodiode/
Tomi Engdahl says:
https://etn.fi/index.php/tekniset-artikkelit/18748-muuta-laempoe-saehkoeksi
Tomi Engdahl says:
https://etn.fi/index.php/tekniset-artikkelit/18762-tehonsyoetoen-suojaus-muuttuu-ohjelmoitavaksi
Tomi Engdahl says:
https://hackaday.io/project/195961-integrated-hub-ethernet-usb-rs232
Tomi Engdahl says:
https://etn.fi/index.php/tekniset-artikkelit/18791-juotokseton-z-liitos-ratkaisee-pinotun-elektroniikan-luotettavuusongelman
Tomi Engdahl says:
https://www.edn.com/led-tools/#google_vignette
Tomi Engdahl says:
https://community.element14.com/members-area/personalblogs/b/blog/posts/the-art-of-noise
Tomi Engdahl says:
https://hackaday.com/2026/04/14/audio-reactive-led-strips-are-hard/
Tomi Engdahl says:
https://www.eevblog.com/forum/projects/bourns-encoder-filter-is-the-extra-r-useful-in-practice-are-the-values-good/
Tomi Engdahl says:
https://etn.fi/index.php/tekniset-artikkelit/18941-naein-pakattiin-3-kilowattia-haemmaestyttaevaen-pieneen-teholaehteeseen
Tomi Engdahl says:
https://etn.fi/index.php/13-news/19055-uusi-kotelo-jaeaehdyttaeae-sic-tehopiirin-ylaekautta
ROHM on kehittänyt uuden pintaliitoskotelon SiC-MOSFETeille. TSC3PAK-kotelossa lämpö johdetaan komponentin yläpinnan kautta, mikä tuo pintaliitoskomponenttiin läpiladottavien TO-247-tehopiirien kaltaista lämmönhallintaa.
Piikarbiditehopiirien käyttö laajenee sähköautoissa pääinverttereistä myös muihin tehomuunninpiireihin. Niitä käytetään esimerkiksi ajoneuvojen sisäisissä latureissa ja sähkökompressoreissa. Samaa kehitystä nähdään myös palvelinteholähteissä ja aurinkosähköinverttereissä, joissa hyötysuhteella on suuri merkitys.
Tehokkaat SiC-komponentit on perinteisesti pakattu läpiladottaviin koteloihin, kuten TO-247-rakenteisiin. Niiden etuna on hyvä lämmönpoisto, mutta ne vaativat enemmän tilaa ja niiden ladonta on hankalampaa automatisoida.
ROHMin uusi TSC3PAK on pintaliitoskotelo, jonka koko on 14,00 × 18,58 × 3,50 millimetriä. Yläpuolisen jäähdytysrakenteen ansiosta komponentti voidaan asentaa automaattisesti, mutta ROHMin mukaan lämmönpoisto vastaa perinteistä TO-247-4L-koteloa.
Tomi Engdahl says:
https://etn.fi/index.php/13-news/19072-sic-nousi-uudelleen-parrasvaloihin-vaikka-gan-valtasi-jo-siltae-alimpia-jaennitteitae
Tomi Engdahl says:
NE5532 changes
https://youtu.be/22ZmmZ67SMY?is=6Ej4JwiXzr6IPJzD
Tomi Engdahl says:
https://www.akm.com/global/en/products/current-sensor/tutorial/coreless-current-sensor/
Tomi Engdahl says:
https://sound-au.com/appnotes/an002.htm
Analogue Meter Amplifiers
Tomi Engdahl says:
https://hackaday.com/2026/09/08/the-different-ways-to-look-at-negative-resistance/
Tomi Engdahl says:
https://hackaday.com/2026/09/08/disassembling-a-mini-air-blower-to-make-rc-airplanes/
Mike FC says:
This overview of control circuits and power distribution caught my attention because of a recent conversation I had with a close friend who works in spa maintenance and sales. He was explaining how modern equipment relies almost entirely on complex circuit boards for precise temperature regulation, digital filtration cycles, and automated energy management, making solid electronics knowledge essential for proper setups. Getting the wiring, breaker sizing, and board configurations right during a hot tub installation buffalo ny job can make or break the unit’s long-term reliability. Thanks for sharing these technical insights!