Ultrasonic Range Meter

December 1, 2020 0

I have attached a document of the circuit explanation of my ultrasonic range meter. But now I want to know if Im going to insert […]


What is Saturation in Transistors

November 4, 2020 0

Date 8/30/06 Simon and delabs Simon: hello, delabs: hello Simon: we have many meanings for saturation, delabs: means turning on, also means no longer linear, […]

Ammeter and Precision Rectifier

October 22, 2020 0

Studying current measurement is a prerequisite for many of the measuring techniques. The current parameter mainly specifies the power consumption in a circuit, given the […]


Microcontroller and SBC in Real World

July 7, 2020 0

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 […]


What is a Relay – Jim Asks

February 21, 2020 0

(A text chat in Google talk long ago from my email records – 2007) Jim: hello, delabs: hello Jim: i have a Small problem,it’s about […]


Soldering Iron Tip

February 13, 2020 0

Can I use stainless steel to replace a defective soldering iron tip? mail from EA Soldering iron tips are mostly alloys of copper. the thermal […]


Passive volume control

February 6, 2020 0

please if you don’t mind I need to help to find a control circuit for volume of speaker 4 ohm or 8 ohm located in […]


Seven Segment LED display

January 13, 2020 0

how is the circuit for driving a seven segment led mail from EA A 7 segment LED display is used to display a number 0-9 […]