555 watchdog for uC and uP systems
When the microcontroller hangs due to a spike, EMI or RFI etc. the 7555 will reset the uC, if proper power supply design is done […]
Month: October 2016
PLL using 4046 – Phase Locked Loop
CD4046 is a PLL or phase lock loop, it mainly consists of a VCO and phase comparators. This is a component in FM demodulation and […]
Single Polarity Power Supply
This circuit uses a PNP Power Transistor TIP2955, you can use any other according to your current and voltage requirement. Look at R2 a 10 […]
Isolated RS-232 Serial Port Interface to SBC
Subject: Help! – Date: Thursday, December 16, 2010, 4:40 PM Hello delabs I have question about one your project . The question is about the […]
SCADA System – Project Idea
I am a student of Electronics and Instrumentation Branch from BP. I am doing my training at ….. where i have been assigned a project […]
Ultrasonic distance measurement
The following was submitted on June 7th, 2007 at 01:47AM (PDT). message: sent me the ultrasonic distance meter circuit Mail from MS Design of an […]