Op-amp Tester design for single, dual and quad packages. Dual-polarity LED as indicator. #pcbway#

Electronics Old and New by M Caldeira

description

Only $5 for 10 PCBs and every new member get $5 bonus. + Express 24 hour / 48 hour service on https://www.pcbway.com/ We all use op-amps in this hobby, as they truly are amazing building-blocks for many projects. Like many other hobbyists, I've occasionally been frustrated by using an op-amp that isn't fully functional, resulting in a waste of time trying to find a fault that could have been avoided if the condition of the component could have been easily checked. This is my goal with this project. I want to design a tester that can easily tell me if the op-amp is good or not, regardless of whether it is a single, dual or quad package. The basic concept involves creating a vibrator circuit using the op-amp under test as the driver, to drive an indicator LED. A dual-polarity LED is used in this case, as it provides a simple two-colour indication of a functioning op-amp. Hope you enjoy the video.

A good tutorial on Op-amp Vibrator circuit can be seen here: https://www.electronics-tutorials.ws/opamp/op-amp-multivibrator.html

You can now support the channel: https://www.patreon.com/mcaldeira https://paypal.me/macaldeira

#tuberadios #antiqueradio #radiorestoration

_HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM DIY TEST GEAR: The title says it all: https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL

RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment: https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf

HowTo's: Various videos on some simple techniques and projects: https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO

See also playlists on some other completed restoration projects.

PHILIPS BX750A: https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF

TELEFUNKEN OPUS 2114: https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu

SABA UW-175-Z 3D: https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p

GRUNDIG 1070: https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI

SCHAUB-LORENZ GOLDY 58 type 3020: https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ