Projects, Designs, and Technical Stuff

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	Anyone have info on this 8-digit 18-segment LED display?	wobbly	8 Replies 1250 Views	April 23, 2026, 11:20:59 pm by free_electron
	ZX7-200 inverter welder teardown	ealex	19 Replies 13451 Views	April 23, 2026, 07:57:05 pm by Unixon
	Eaton Powerware 9120 (1000W) - Capacitor ESR measurements after 20 years + PDF S	Valkost	5 Replies 803 Views	April 23, 2026, 05:51:48 pm by Valkost
	super simple 1-channel relay module based on the G5NB relay (PCB)	Mahmoud-2000	1 Replies 564 Views	April 23, 2026, 03:04:10 pm by Ian.M
	PowMr M60-PRO MPPT hacking to add WiFi/Bluetooth ?	anan5a`	0 Replies 261 Views	April 23, 2026, 01:14:38 pm by anan5a`
	Help with 200V / 500ns piezo pulser circuit (LT3750)	mesrouxvais	11 Replies 1003 Views	April 23, 2026, 04:06:44 am by Renate
	Compact Low Power WiFi Moules	ricko_uk	8 Replies 856 Views	April 23, 2026, 12:41:30 am by ricko_uk
	2sj175 for j175?.	tedsorvino	5 Replies 545 Views	April 22, 2026, 11:08:38 pm by Alex Nikitin
	Trimming offset of a generic Chinese 5 digit voltage panel meter	benj38	11 Replies 1035 Views	April 22, 2026, 08:04:38 pm by Kleinstein
	Adafruit #2090 2.8" TFT LCD display - backlight dimming with PWM does not work	MisterHeadache	9 Replies 843 Views	April 22, 2026, 06:24:06 pm by dietert1
	Pi filter attenuation problem	likith.A	10 Replies 928 Views	April 22, 2026, 04:44:13 pm by mtwieg
	Need help finding connector from Cooler Master MasterLiquid Atmos II PC cooler	TERRA Operative	4 Replies 419 Views	April 22, 2026, 08:59:08 am by TERRA Operative
	Understanding the FCC Process with Pre-Certified Components	semir-t	14 Replies 6705 Views	April 22, 2026, 08:52:40 am by YUWEIJJR
	LC discharge network question for Oriel flash lamp	pottyprofessor	4 Replies 427 Views	April 22, 2026, 03:56:57 am by pottyprofessor
	Slow Fourier Transform « 1 2 All »	azeeman	26 Replies 2500 Views	April 22, 2026, 12:33:38 am by radiolistener
	Architecture Review: Portable Electrochemical Gold Karat Sorter (High-Z, Microvo	Bessous Fethi	17 Replies 1471 Views	April 21, 2026, 10:35:32 pm by Bessous Fethi
	First circuit and PCB	gcain	17 Replies 1105 Views	April 21, 2026, 02:45:47 pm by negativ3
	Designing LiFePo4 based charging circuit	anso-engineer	7 Replies 721 Views	April 21, 2026, 07:00:05 am by anso-engineer
	fast, rust-based parser for rigol and tektronix .wfm files (with python bindings	Galoo	0 Replies 404 Views	April 21, 2026, 06:37:42 am by Galoo
	Is it possible to test BGA chips (FPGAs) without having to solder them to a PCB?	GAMMA	14 Replies 1945 Views	April 21, 2026, 05:16:41 am by amyk
	"MLCCs ... do not require any voltage derating"	741	21 Replies 13538 Views	April 20, 2026, 09:08:56 pm by Zipdox
	M12 panel connectors with O rings	Simon	13 Replies 1108 Views	April 20, 2026, 08:58:00 pm by tooki
	Integrating KiCad, Ngspice and Python	azeeman	4 Replies 941 Views	April 20, 2026, 08:38:09 pm by bson
	Simulating a massive 3.3V to 5.5V reflection overshoot (Classic SI mismatch)	maheshmpnair	2 Replies 345 Views	April 20, 2026, 05:14:39 am by Andreas
	Anyone have trick for dev work with USB UART without having to keep reconnecting	Psi	8 Replies 952 Views	April 19, 2026, 05:16:26 pm by zapta
	/dev/null	sphinx	4 Replies 1637 Views	April 19, 2026, 07:31:18 am by Renate
	How much improvement can I expect from a different LED Driver with less RdsOn?	AmeliaBuns	5 Replies 514 Views	April 19, 2026, 04:19:40 am by AmeliaBuns
	PWM IC single ended to push-pull conversion?	ifonlyeverything	2 Replies 372 Views	April 19, 2026, 01:14:01 am by ifonlyeverything
	Different styles of USB Type-C connectors - why?	HwAoRrDk	2 Replies 1136 Views	April 18, 2026, 08:17:11 pm by HwAoRrDk
	Trace Width Question	bostonman	9 Replies 1150 Views	April 18, 2026, 04:46:27 pm by SiliconWizard
	SD Memory Card muxing chip requires layer switch?	ejkreboot	0 Replies 213 Views	April 18, 2026, 03:42:19 pm by ejkreboot
	High Power ESC Schematic	ouew	13 Replies 2702 Views	April 18, 2026, 03:10:51 pm by tooki
	UPS School Project	Jesse Slotman	8 Replies 1168 Views	April 18, 2026, 01:48:55 pm by Jesse Slotman
	Discovered a way to "erase" the crossover distortion in class B amps. « 1 2 All »	Kokoriantz	41 Replies 6841 Views	April 18, 2026, 09:18:18 am by USDT
	Bypassing the error amplifier on UC3842/UC3843 (Unitrode DN-89)	Whales	16 Replies 4360 Views	April 18, 2026, 04:43:31 am by max.wwwang
	Integer PLL multiplier square wave very slow speed/frequency Hz-kHz	MKRD	22 Replies 2030 Views	April 17, 2026, 11:53:01 pm by PCB.Wiz
	Aircraft neutral and grounding on 28V PSU output	KlausKragelund	5 Replies 880 Views	April 17, 2026, 09:11:13 pm by MKRD
	Built a tool that catches CE/FCC/ACMA compliance gaps before lab submission	salvator	0 Replies 255 Views	April 17, 2026, 01:42:55 pm by salvator
	Could you please help me identify this ic? I think it’s a gate ttl or something.	tedsorvino	12 Replies 1038 Views	April 17, 2026, 01:05:54 pm by tedsorvino
	Super simple ESR meter with a resolution of 10 mOhms. « 1 2 3 4 All »	iet	94 Replies 22234 Views	April 16, 2026, 10:35:30 pm by iet