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Analog, Digital, Electrical and Power Electronic Designs. Here you will find some of the product and circuit designs of delabs. Some are Educational, Generic and few others are related to Application Notes. Many are Intellectual Property of delabs contributed to EE Education.
- Flashing LEDs Electronic Kit
- World of Heathkit do-it-yourself electronics
- LED Blitzer is a LED Blinker
- DMM range and AC-DC mode Logic
- Inverting Amplifier – Op-Amp Circuits
- Digital Programmable Gain Amplifier
- Power supply with battery backup – DMM
- Single Polarity Power Supply
Flashing LEDs Electronic Kit
– ApogeeKits created the Flashing LED’s electronic kit AMK102B as an entry level introduction to electronic kit building.
World of Heathkit do-it-yourself electronics
All of man’s progress has stemmed from ideas, ideas held by men and women who pioneer new concepts.
LED Blitzer is a LED Blinker
This strange circuit was in Openclipart i am not sure if it will work.
This is the third circuit that you will need to build a Simple Benchtop DMM with no Microcontroller. Here the U1D and U1B 4093 acts like a de-bouncing circuit for the push keys.
Input Impedance of this module is Ri as pin 2 is at virtual ground, the opamp with feedback tries to maintain pin 2 and 3 at same potential pin 3 is at 0V hence pin 2 is at virtual ground.
I read your post which is about, Digital gain control of Op-amp. I have some questions to ask, if possible.
This is a simple charger circuit which will work for a light load like a DMM, the Battery can be a sealed maintenance free battery of 9V-2AH or better.
This circuit uses a PNP Power Transistor TIP2955, you can use any other according to your current and voltage requirement.