Get 5V from 9V Battery for TTL 7400 IC

[muh_j18]

hi,
I'm working on a project where I'm using a ttl 7400 ic which need +5v Vcc, how can i use 5v from a battery 9v, variable resistor works?
thanks

 

[MATLABdude]

hi,
I'm working on a project where I'm using a ttl 7400 ic which need +5v Vcc, how can i use 5v from a battery 9v, variable resistor works?
thanks

That really doesn't work too well if you're drawing a lot of current, or something that has a lot of variable current draw. It's a lot easier to use a linear voltage regulator, something like an LM7805 (lots of companies make these--National Semiconductor, Texas Instruments, On Semiconductor, etc. etc.) They're cheap and pretty reliable.

 

[oswaler]

I would recommend using a voltage regulator to regulate the 9V from the battery down to 5V for the TTL 7400 IC. This will ensure a stable and consistent voltage supply, which is important for the proper functioning of the IC. Using a variable resistor may work in some cases, but it may not provide a reliable and consistent voltage output. Additionally, using a voltage regulator will also protect the IC from any fluctuations in the battery voltage. I would suggest researching different types of voltage regulators and selecting one that best fits your project's needs.