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attiny 100 KHz sine generator
If you want to create strong fields, look for the techniques used for "induction heating" i.e.: Power transistor half- or fullbridges with resonant LC circuits.
Monday, 7 April 2014 - 06:07
Three 90 deg phase shifted sinosoids
You may use a DDS implementation with 3 phase output See also: https://www.avrfreaks.net/index.p...
Sunday, 6 April 2014 - 17:50
Three 90 deg phase shifted sinosoids
In some restricted way it could probably be done using the PWM units together with the deadtime units some AVRs have.
Saturday, 5 April 2014 - 15:41
What development jigs do you use?
Both are adapters for in-circuit ISP programming: Left side: Adapter for Tiny45-85 and similar. Connects a TINY85 either to ISP or to board using 3 relays. Right side: ISP adapter...
Saturday, 5 April 2014 - 15:06
Propagation delay compensation
Idea 1: Put some gates in the path for the undelyed lines Idea 2: Send the signals you want to delay also through an 157 Idea 3: Tie one input of an additional 157 mux on low, the...
Sunday, 23 March 2014 - 16:48
Samsung Charger USB Theory of operation
I think these self-oscillating power supplies are some of the most tricky electronic designs. Once I reverse engineered one. If you want the resultm send me a PM with your e-mail.
Sunday, 9 March 2014 - 16:49
Programming options for AVRs in teeny tiny circuits
Perhaps use a bootloader with a serial protocol using just one pin.
Saturday, 8 March 2014 - 16:38
Which FET?
My local supplier (www.reichelt.de) has BF245B and BF245C in stock. I could order some and send them to you. If you need only 2, I have enough to send you 2, give me a PM. BFR31...
Tuesday, 25 February 2014 - 17:12
Long range copper communications
How much dollars are allowed per node and how many components per node maximum?
Saturday, 22 February 2014 - 15:03
Measuring phase angle of Voltage and Current
Hi Incal99, if you send me your e-mail via PM, I might send you a paper that I did with some colleages 10 years ago. Much lower frequency, much simpler CPU, but perhaps the...
Thursday, 30 January 2014 - 08:23
Can I read a synchro with 3 analog inputs?
Hi Bob, if you send me your e-mail in a PM I can send you an ELEKTOR article about my avionics project. I think an AVR can convert a lot of synchros simultaneously, it can also...
Friday, 20 December 2013 - 15:37
AVR ADC analog bandwith?
I once built an RMS meter using an AVR and random sampling. I checked it with a sine-signal. It gave quite accurate results up to 100kHz. At 500kHz the error was 10%, at 1MHz the...
Thursday, 4 July 2013 - 18:20

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