Presettable Up-Down Counter Timer
When i had put the near Obsolete digital circuits online in the late nineties. One person who works in a public institution in the usa, wanted a modification of one of my existing circuits....
Microcontroller and SBC in Real World
details required for… Atmels 89C52 Microcontroller A/D D/A converter Keypad LCD display(Or LED Display) 5V Regulated power supply. Temperature & Humidity controller using PID control algorithm implemented using Atmel’s 89C52 microcontroller for a AHU...
Working with SMD and SMT PCB
One thing tho, i would like to request you to send me some procedures on how to work with surface mount devices (SMD’s). I cant get the IC as DIP so i have no...
Datasheets and IC Application Notes
Vintage DataBooks are a valuable source of Electronic Product Design Ideas. Study the Applications. Folkscanomy Electronics: Books on Electronics, Circuits and Processors You will also find Radio Electronics and many other Datasheets. Even of...
Mains Voltage Stabilizer Step up Circuit
i kinda found myself in a place where the voltage is so low (80v-110vAC) and i need to boost it up to 220v so what can i do? i have a burnt stabilizer (that...
Lamp Dimmer DC with L296
I need a simple circuit to drive a 12v DC (4amp) light. But, it needs to dim to 25% over a specified amount of time. Basically it needs to hold at 25% (4v) for...
RS485 Modbus – Wireless Interface
I am working on alarm systems and would like assistance in designing wireless link for the unit, ie sensors to control panel, control panel to monitoring station. I noticed most of the circuits available...
Power Supply with Battery Backup
This is an incomplete version of the power supply used for the Alertness Monitor with hourly LED Display. This circuit used a Dual Color LED. Green meant Alert and Red meant No Alert or...
