Get 5V from 9V Battery for TTL 7400 IC

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To power a TTL 7400 IC requiring +5V from a 9V battery, using a variable resistor is not recommended due to potential issues with current draw. A more effective solution is to utilize a linear voltage regulator, such as the LM7805, which is widely available and reliable. This approach ensures stable voltage output even with varying current demands. The LM7805 is an affordable option from various manufacturers, making it suitable for this application. Using a voltage regulator simplifies the design and enhances performance.
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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
 
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muh_j18 said:
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.
 

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