What’s inside a dial-in pacemaker monitor system? Datasheets: LMV824 MAX4330 CNY64 Optocoupler ADSP-2185N DSP CX88168 Smart Modem with Voice CODEC MAX994 10bit ADC Meder Reed Sensor Probe shock video showing the piezoelectric effect Forum HERE Podcast: Download
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Lots of test equipment auction goodness from Precision Mechatronics who went into liquidation. And is it possible to mod a system PSU with binding posts? Service manual HERE Keithley 2400 SMU Source Unit Agilent 54845A 1.5GHz Infiniium Oscilloscope Agilent E3646A dual output bench power supply Agilent 6641A and 6643A DC …
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Behind the scenes at the 2014 Sydney Mini Maker Faire at the Powerhouse Museum. Podcast: Download
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Highlights from the 2014 Sydney Mini Maker Faire Introduction Video Behind The Scenes Video Growing Maker Communities Video Podcast: Download
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Dave explains a big trap in high frequency measurement with your oscilloscope. Based on a viewer request, Dave demonstrates how to incorrectly and then correctly measure the signal output level over frequency of your function generator using your oscilloscope. Some whiteboard transmission line theory is thrown in as well. Forum …
Read More »I’ll be at the Sydney Maker Faire this weekend (16th-17th), roaming around with the camera for two days, come up and say HI. I’ll also be having a “Fireside chat” with Sebastien Eckersley-Maslin (CEO of startup incubator BlueChilli)
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Mailbag Monday Coin Validator & Laser Scanner Teardowns Datasheets SCX6206 1980’s Microchip/GI EEPROM Chopper Amplifiers Forum HERE Podcast: Download
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In the last day there has been some buzz about the uBeam wireless energy charging device, which of course, like all great new inventions, does not actually exist yet, it just needs the magic input of money. It ticks all the media story hype boxes though – designed by a …
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Dave reviews the Canon HF G10 Camcorder and compares it with his HF G10 for his blogging purposes. This is practically an identical video camera to the XA20 and X25 models. Extended video is HERE Forum HERE Podcast: Download
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What’s inside a 1964 vintage Power Design 2005 Precision Power Supply? Schematic HERE Forum HERE Podcast: Download
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Mailbag Monday Dave opens his mail, outback Australian style… Franky’s Ebay Store Ten Essential Skills for Electrical Engineers WiFi Digital Radio teardown 1970 vintage Magnetic Core Memory! Forum HERE Podcast: Download
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Dave upgrades his HP/Agilent 53131A frequency counter with an ovenised oscillator module from ebay. http://www.ebay.com.au/itm/121330209846 http://www.thinksrs.com/downloads/PDFs/Catalog/PRS10c.pdf http://www.2917.com/EBAY-images/NOX012166/STP2145A.pdf http://cp.literature.agilent.com/litweb/pdf/5967-6039EN.pdf Forum HERE Podcast: Download
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Did you know you can use your frequency counter to detect gravity? You’ve likely done it before and you didn’t even know it! Dave demonstrates the phenomenon of 2g-tipover on quartz crystal oscillators in an Agilent 53131A frequency counter. Related videos: How a rubidium frequency standard works FE-5680A Rubidium Standard …
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Dave looks inside the most popular microcomputer of the 1970’s, the Radio Shack / Tandy TRS-80 Model I And also a look at the TRS-80 Model 102. Bonus EMI testing for fun. Bonus rant on how slow the Tektronix MDO3000 is in RF mode. TMS4116 16Kb DRAM Level II BASIC …
Read More »I’ve had a lot of people ask me to comment on THIS project in Kickstarter. It was supposed to be a rechargeable battery based on Lithium Ion Capacitor technology. Ok, cool, nothing wrong with that, sounds good. A guy has mated a Lithium Ion Capacitor with a small custom regulator …
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