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Combinational Logic eBook Combinational Logic Circuits are digital electronic circuits which perform Boolean logic operations on their inputs to produce outputs, without any form of feedback or memory. They are called combinational because their output state only depends on their...
Tau, symbol τ, is the greek letter used in electrical and electronic calculations to represent the time constant of a circuit as a function of time. But what do we mean by a circuits time constant and transient response. Both electrical and electronic circuits may not always...
The electronics student or hobbyist’s always likes to make various circuits for their home or school and especially ones that flashes a few lights. There are many circuits and kits on the market that can flash any number of LED's or lights periodically, randomly or sequentially...
Open Collector Outputs are increasingly common in digital chip design, operational amplifiers and micro-controller (Arduino) type applications, for either interfacing with other circuits or for driving high-current loads such as indicator lamps and relays which maybe incompatible...
As its name implies, the bridged-T attenuator has an additional resistive element forming a bridged network across the two series resistors of the standard T-pad attenuator. This additional resistive element enables the circuit to reduce the level of a signal by the required atte...
Boolean Algebra simplification is not that difficult to understand if you realise that the use of the symbols or signs of: "+" and "." represent the operation of logical functions. Logical functions test whether a condition or state is either TRUE or FALSE but not both at the sam...
The Toggle Flip-flop is another type of bistable sequential logic circuit based around the previous clocked JK flip-flop circuit. Toggle flip-flops can be used as a basic digital element for storing one bit of information, as a divide-by-two divider or as a counter. Toggle flip-f...
An FET Current Source is a type of active circuit which uses a Field Effect Transistor to supply a constant amount of current to a circuit. But why would you want a constant current? Constant current sources and current sinks, (a current sink is the reverse of a current source) a...
