All Questions
Tagged with 7805 power-supply
3
questions
5
votes
5answers
10k views
Selecting input voltage for 7805
I generally use switching 12V power supplies for my circuits since they are so common, but I understand the 7805 can take a lower input voltage.
If I gave the 7805 a lower input voltage (i.e. 9V), I ...
4
votes
4answers
1k views
Reducing voltage drop over 7805 regulator?
I have several projects (clocks) that require 12V and 5V supply. The 5V is for TTL ICs and the 12V powers a SMPS(Switching Mode Power Supply) to give HV(High Voltage) for a tube. The 12V pulls less ...
1
vote
2answers
482 views
Positive and Negative Voltage Regualtors
I was wondering whether I could use a negative voltage regulator, specifically a 7905, as a drop-in replacement for a positive one, 7805.
On closer inspection of the datasheet, I realized that pin 1 ...
