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- fpga4fun – Electronic Adventures with FPGA
- Designing Mixed Analog Chips and Circuits
- Optical switch with photo sensors
- Electronics Reference Library – Bill

FPGAs are powerful programmable logic integrated circuits. FPGAs are wonderful devices to design digital logic with. You can design a circuit on your computer and have it running on your desk in minutes.

These are some updates on Analog and Mixed Design pages online. A/D Converters are important because the world is full of mainly analog signals (more…)

Can you help me to find circuits which uses photo-sensors.and if you do have them, would you please send them to me.

Basic Electricity – Start here if you don’t know anything about electricity or electronics. These pages cover the basics. They are great for young students.
delabs Technologies
Electronic Circuits
Electronics Circuits
- Optical switch with photo sensors
- Mains Current Indicator with a LED
- Microcontroller Interfacing

Can you help me to find circuits which uses photo-sensors.and if you do have them, would you please send them to me.

This is a mains 230V AC load current indicator and is a LIVE CIRCUIT, so take care. The Resistors have to be a fusible ceramic wire wound.

None of this is specific to a particular microcontroller or family of microcontrollers; it applies equally well to PICs or AVRs or 8051s or any other processor.
Hobby DIY Electronics
Hobby Garage
- fpga4fun – Electronic Adventures with FPGA
- Electronics Reference Library – Bill
- QRZ Ham Radio

FPGAs are powerful programmable logic integrated circuits. FPGAs are wonderful devices to design digital logic with. You can design a circuit on your computer and have it running on your desk in minutes.

Basic Electricity – Start here if you don’t know anything about electricity or electronics. These pages cover the basics. They are great for young students.

QRZ was founded in 1992 by Fred Lloyd, AA7BQ as a spinoff of what was once called the “Callsign Project”, a cooperative effort designed to obtain and distribute FCC database tapes.
Tech Media Network
Tech Media Network
- Designing Mixed Analog Chips and Circuits
- Open Source Hardware – OSHW Draft Definition
- Electronics Index of Calvert

These are some updates on Analog and Mixed Design pages online. A/D Converters are important because the world is full of mainly analog signals (more…)

OSHW Draft Definition 0.3 is based on the Open Source Definition for Open Source Software and draft OSHW definition 0.2, further incorporating ideas from (more…)

Many may already know about these EE Educational pages with Circuits of J. B. Calvert. These pages are valuable as they are like a (more…)