HeyJaredSteven Leibson
- Indexed articles, last 90 days
- 6
- Latest publication
- Sep 14, 2026
- Outlet visibility, for EE Journal Semiconductors
- Top 5M sites
- Earliest in this view
- Jul 6, 2026
Latest articles
An HP 3478A DMM Rescue, Part 2: Eternacell Batteries are Forever (Apparently) (opens the original)
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With the RIFA capacitors replaced in my HP 3478A DMM (see “An HP 3478A DMM Rescue, Part 1: RIFA Madness”), I was able to safely power up the DMM in preparation for battery replacement. With the power on, the DMM no longer relied on the battery to preserve the calibration data. It’s not a simple matter to replace the data-retention battery in the 3478A. You have three options. First, you can read the calibration parameters from the SRAM one by one using undocumented commands sent over the DMM’s H
An HP 3478A DMM Rescue, Part 1: RIFA Madness (opens the original)
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I really wasn’t planning on buying another DMM, but the forlorn, tattered and torn HP 3478A with a beat up case and cracked display window called out to me like a sad-eyed puppy or kitten in an animal shelter. Listed at $58 including free shipping, my autonomic nervous system clicked on the “buy it now” button faster than conscious thought. When my eBay DMM arrived, it was safely swaddled in yards and yards of bubble pack, protecting it from further damage. A quick visual inspection revealed a t
100W Class D Subwoofer amp: Build or Buy? (opens the original)
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I started working with electronics in high school, back in the 1960s. Heathkit got big in this era. Radio Shack was in its component prime during this time. Building electronic systems from component parts was where it was at. Fast forward 60 years and my how things have changed. Radio Shack is all but gone with a remaining remnant. Heathkit is gone, but there’s a remnant remaining there too. The electronics industry’s focus has shifted to Asia, where you can buy components, loaded boards, subsy
Mysterious Frequency Counter Twins from 1979 (opens the original)
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After repairing and upgrading two Heathkit IM-2420 frequency counters and two HP 5314A frequency counters, I have developed a deep obsession with these instruments. When a Trionyx TR-1000 counter appeared on eBay for $11 (plus $16 for tax and shipping), I snapped it up despite its obviously rough shape. The small form factor and industrial clamshell design spoke to me. I’d never heard of Trionyx, so I did a bit of online research while waiting for the counter to arrive. The Internet was of very
Adiuvo’s $50 Forgix Board Crams RP2354 Microcontroller and Trion T8 FPGA into a 28-pin Teensy Footprint (opens the original)
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Hot on the heels of Adiuvo’s introduction of the Explorer FPGA board (see “Need a low-cost FPGA dev board? Check out Adiuvo Engineering’s $99 Explorer board with an AMD Artix UltraScale+ FPGA”), the company has now introduced a $50 development board called Forgix, which combines a Raspberry Pi Pico RP2354 with Efinix Trion T8 FPGA, all fitted into the 28-pin DIP footprint of a Teensy microcontroller board. The RP2354 variant of the Raspberry Pi Pico microcontroller includes all the features of t
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Top 5M sites
For EE Journal Semiconductors, the outlet · Measured Aug 1, 2026
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