LM7805 Regulated 5 Volts

After my post on the Basic Arduino, I have had several questions on powering it. The Atmel chip requires regulated 5 volts so you can not hook it up directly to batteries and many wall plugs. Most of the time I use a LM7805 voltage regulator. They are cheap and easy to obtain. These regulators do run warm, so most projects require a heat sink. The input range of the LM7805 is 7 – 25 vdc. It is capable of 1.5a output.

Advertisements

The capacitors used in my circuit are 10uF and 1uF. Both of these values are very common in my shop and have worked well with my projects. The datasheet from the manufacturer  uses .33uF and .1uF. The diode is not required but I like it for protection.

Testing with Baofeng battery
Advertisements

Links

https://www.sparkfun.com/datasheets/Components/LM7805.pdf

Latest Post

Advertisements

1 thought on “LM7805 Regulated 5 Volts

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this:
search previous next tag category expand menu location phone mail time cart zoom edit close