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I'm not finding that a helpful comment. Obviously I have tried to read the rest of the datasheet for the MOC3041, and the datasheet for the triac, but I am not sure what the dependencies are.
I want to switch my basement lights (2x40W tubes @ 110V) and have selected a MOC3041 optocoupled triac driver and BT136 sensitive gate triac. The schematic I am looking at is Figure 13 on https://www.futurlec.com/LED/MOC3041.shtml. It specifies 360R resistor in series with the load and 330R...
I made a HF pedal for my welder with an illuminated footswitch. I wired it up by trial and error, and it sort of works, but I don't know why!
The foot switch makes a circuit for a secondary output primary coil which energizes a spark gap oscillator that generates high frequency bursts of high...
The project was a (prize winning) entry for the Dangerous Prototypes 7400 competition. I think it is fun to be able to flicker 10 LEDs with a single logic chip. Of course there are lots of other ways to do this sort of thing.
I think there is a place for this. A simple timer circuit blinks only 1 LED and does not give a pseudo random effect. Microcontroller projects involve programming.
I etched a couple of single-sided Arduino PCBs using toner transfer. They came out fine but I would prefer a layout with less drilling.
Link: https://smokedprojects.blogspot.com/2012/12/home-made-arduinos.html
I have been having good results with a new toner transfer technique. Put a heavy hotplate on the stove and dial in a temperature of 175 °C using a thermocouple. Bond the toner image to the copper clad board by placing them print side down onto the hotplate between two sheets of paper and...
I made a true random number generator from a 74HC595 shift register and a 74HC04 hex inverter. With the addition of a 4538 precision monostable and a few passive components, I had a randomly twirling laser cat toy...
There are a few tricks to phase angle control that are specifically discussed in this document:
https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/APPLICATION_NOTE/CD00003856.pdf
Figure 11 shows an application to an arc welder transformer.
A microcontroller can also be...
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