555 Timer based Circuits
The Incredible 555 :
These are some 555 circuits, The most versatile and simple
chip of all time !.
Some of my 555 Circuits are at my blog -
555-Circuits - delabs Schematics
The best part of the 555 is that it has an voltage detection. It
has a Versatile Logic which is defined by voltage comparators.
The ability to loop it like an opamp for feedback makes it the
first "Programmable" Mixed Chip. In short it make an ideal
555 The most Incredible Chip
- At my Learning-Teaching
Blog Solderman Basics.
Signetics made the 555, This is one IC that is like a E-LEGO,
this along with Op-Amps and other components can make many
interesting projects. On some pins like Control Voltage it
responds to analog signals and on Reset and Output the signals
are Digital like. The 7555 a CMOS version consumes lower power
and oscillates at higher frequencies.
555 Astable and Monostable Formulas from an Application note of
the first 555 by Signetics. The chip on this page is one of the
first 555 types.
Its drive is amazing, it can power small solenoids, lamps and
relays. It is a Symmetrical output drive, means Source - push
the pectrons into a node and Sink
- pull the pectrons
from a node. Conventional current is opposite to the flow of
electrons. Current flows from positive to negative, so
let me use a new word pectron, imaginary '+' electrons,
Monostable and Astable Formulae from Signetics the Inventors of
Tutor Gadgets for 555
This evergreen or perennial chip is
the favorite among students and hobbyists who want to learn
electronics. Here is a PDF Image Collection i made from the
first datasheet from Signetics and others, it has very nice
illustrations which will act as an appetizer for learning this
Switching Step-Down Power Supply
An Astable clock triggers a Monoshot. The pulse width of oneshot
is modulated by a feedback of the filtered supply at pin 5. PWM
of oneshot is filtered for output. - Signetics NE555 Application
NE555 Applications and
"Study .. Learn .. Examine.. Experiment .. Analyze
.. Establish .. Realize"
- Solderman 1658