Conversion old unregulated Tandy power supply to regulated 9 and 5 volt output.
Has also the little Voltage Sensor on board.
A new life for this power supply after 35 years, spending most of it in the attic. Had only a transformer,
capacitor and rectifier bridge. It had a fuse a long time ago ... Mostly all recycled parts with some new in the mix.
**Old pic (from ebay, no picture ta...
My 1st schematic and PCB design. Just a simple Arduino for us with IC's thatare programmed on a true Arduino board and then slotted into this board. Mainly made this to teach myself about making my own electronics from base components. Comments/tips/suggetions are very welcome, I'd like to get this all right before I send out for the PCB's to be made and shipped.
###How to Make a Simple Circuit with EasyEDA - Step by step tutorial for Beginners###
This step by step guide with lots of screenshots for those who are just beginning to get acquainted with electronics or have not used [EasyEDA] earlier, however, hope that the pros will help you learn something useful. All screenshots are reduced to reading the article with the convenience of...
LM393 Low Power Dual Voltage Comparators DIP-8 test circuit.
Very inexpensive and a good way to learn about OpAmps. Needs 9 volts to operate.
Switch not in schema or PCB, added while building.
Zip file contains a short video of the circuit working.
Tested with DBL358, IR3F02, IR9082, IR94558, JRC4558D, NE5532, KIA393P, HA17393
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This is a small pcb that is designed to be used on an electric go-kart to display a stopwatch, motor RPMs, and cart speed as well as record this data on an SD card with a time stamp for analysis. The project is Arduino based and is ran off of 7-59 VDC or directly from a 5V source through any of the 5V or VIN pins on the data logger shield (this is not a protected input). It is designed to have w...
Some simple projects for beginners to try.
Featuring a basic discrete comparator circuit that is then used in a variety of projects including the EasyEDA ELECTRET_MIC_EE electret microphone and the LDREE, LDR (light dependent resistor, a.k.a photo resistor) symbols and their associated spice models.
!! for learning and the fun of it, maybe next time an op-amp?!!
(all recycled parts, LED's are new)
Part of 9 and 5 volt power supply recycling project.
Power from right after rectifier, this circuit and sensing circuit need common ground.
Sense -> Low: Red LED ON = Power ON, Status LED Blue = Standby, No power to terminals.
Sense -> High: Red LED ON = Power ON, Status LED Green = runnin...