Julian’s postbag: #113 – we love electronics :
A video in which I open my post. This week's eBay items are: 7pcs Mini 25 Points Breadboard Solderless Prototype…
Enhanced joule thief with ldr
Add an LDR to your joule thief and enjoy a whole world of additional usefulness. From day/night functionality all the…
Opto-isolator oscillator
A ring oscillator made of DCOI (Dual Complementary Opto-Isolator) elements. https://hackaday.com/2015/01/09/dual-complementary-optoisolator-logic/
Basic electronics 2-transistor led photodiode circuit
Back to basics with this photodiode 2-transistor LED light circuit activated by darkness. How does it work? Can it be…
Soppy surface mount integrated circuits
Electronics used to be so straightforward - everything based on 1/10th inch spacings. Well, not any more!
Julian’s postbag: #112 – optos, adders, multiplexers and headers
A video in which I open my post. This week's eBay items are: 10PCS PS2501-1 NEC2501 DIP4 DIP-4 PHOTOCOUPLER Photocoupler…
Update: lfsr pattern predictions and randomlessness
More playing with the 41-bit linear feedback shift register because I can't leave the thing alone :)
The 10,000 year shift register
Playing with a 40-bit linear feedback shift register. https://en.wikipedia.org/wiki/Linear-feedback_shift_register http://www.xilinx.com/support/documentation/application_notes/xapp052.pdf
Playing with jfets
20 minutes of playing around with junction field effect transistors (JFETs). Happy new Year!