OR gate with two 555
This shows how to OR gate two 555, when one 555 cycles at a low frequency a valve turns on an off, the second 555 […]
Articles by delabs
Mains Voltage Monitor
i need a circuit design to detect generator voltage and display with LED for certain value of voltage. for example red LED”s for voltage under […]
Electrical Symbols that you should Know
Found these in openclipart and wikipedia, A collection of basic electrical symbols you ought to know. You could use these symbols to add in your […]
Metal Detector Circuits Problem
With the best wishes for you. I found your address and browsed your website. I have a question and hope to take your help and […]
Significance of Current Loop 4 to 20 mA Standard
Subject: delabs comments – Tell Me. message: why 4-20mA standard. why not 2-22mA or any thing else Mail from MU they knew you would come […]
Build a DMM – LM3914 Analog display
This a part of a complete Benchtop DMM that you can build to learn the internals of a Digital MultiMeter. This is oriented towards learning […]
AC conversion and Continuity – DMM
U1A LF353 opamp turns on a buzzer when the voltage at Test + falls very low indicating a short between Test + and Test – […]
Differential Amplifier – Op-Amp Circuits
This amplifies the difference between two inputs Vp and Vn the low impedance of this configuration is a drawback, but can be used in analog […]