T&L Publications

Thanks Steve. This is a much better circuit than the one in the book. Thanks again.

Another reason for the PA external speaker is I have another project that will use the PA system in conjunction with another project.

Thanks for the response Sghioto. I am trying to get the 555 timer circuit to work. I bought a PA external speaker to mount in my rear fender. I do have a 555 timer from NTE555. I just need to know how to make this work. I tried at my parent’s house on a static mat, but the circuit never worked. I al...

Hello Community Tech's, I am also currently working on a Back up Beeper for a car application. Where I live in an apartment setting, I am having a problem with other driving their cars wondering what I am doing when they are behind me. I like to back up car in so it’s easy to move forward when I mov...

Thanks much Steve, I was also going to use a potentiometer to adjust the brightest of the 7-Segment LED display; I would like to be able to tie it into my car’s instrument cluster variable resistor. I need to do some research on how much current is going through it and the ohm value. Then I can plac...

Hello Community I am interested in building a project with the ICL7107 chip from Intersil. I have one of the Encyclopedia of Electronic Circuits Volume 2. I found an old circuit that uses an old Analog to Digital IC chip from RCA CA3162E and can be used for many other applications. I download the .p...

I want to, Thank You all for your input. I really appreciate it. When your in the middle of the project sometimes, it’s best to get outsiders valued views. I have considered dyarker’s idea about going to the junk yard for a 2002 condenser. It will work in my 1999 Pontiac Grand Prix. There is no ...

I am trying to install an Air Conditioning window unit in my car. I plan on using another battery in line with the car’s battery in parallel and placing a 2000 watt Inverter in front of the Air Conditioning window unit. I was told in doing this I could cause damage to the PCM or other electronic c...