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CD4013 Push Button CMOS Toggle Flip Flop – Circuit Schematic
CD4013 Push Button CMOS Toggle Flip Flop
The circuit below uses a CMOS dual D flip flop (CD4013) to toggle a relay or other load with a momentary push button. Several push buttons can be wired in paral...
32 Bit CMOS Serial Receiver – Circuit Schematic
32 Bit CMOS Serial Receiver
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Optical toggle switch using a single Chip – Circuit Schematic
Optical toggle switch using a single Chip
Optical toggle switch using a single Chip. Using dual flip-flop IC CD4027 employ a 555 based monostable circuit to supply input clock pulses. The circuit descri...
7 Segment Display Counter based 74LS90 – Circuit Schematic
7 Segment Display Counter based 74LS90
Here is a 7 segment counter circuit based on IC 74LS90 TTL. This can be used in conjunction with several circuits where a counter to show the progress adds a li...
Static 0 to 9 Display using SN7446 and 7490 – Circuit Schematic
Static 0 to 9 Display using SN7446 and 7490
The circuit shown here is a simple Static 0-9 Display can be used in many applications. The circuit is based on 7490 asynchronous decade counter (IC2), a 7-segm...
Circuit Diagram Xnor Gate Gates – Circuit Schematic
Circuit Diagram Xnor Gate Gates
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Logic Probe With Sound – Circuit Schematic
Logic Probe With Sound
This logic probe can be selected to operate on TTL or CMOS logic levels, depending on switch S1. A string of resistors associated with switch S1 sets the thresh...
Electronic jam circuit diagram – Circuit Schematic
Electronic jam circuit diagram
The circuit provided right here allows up to eight participants with each one assigned a unique number (1 to 8). The display will show the number of the Electro...
digital scoreboard circuit – Circuit Schematic
digital scoreboard circuit
Digital scoreboard circuit functions to display values from 0 to 9 on the 7 segment display. 7 segments using a type of common anode. 7 segment driver IC using ...
Toggle Flip Flop Laser Pointer Using CD4013 – Circuit Schematic
Toggle Flip Flop Laser Pointer Using CD4013
The circuit below is similar to the one above but can be used with a laser pointer to toggle the relay rather than a push button. The IR photo transistor Q1 (Ra...
Simple Discrete Logic Probe – Circuit Schematic
Simple Discrete Logic Probe
This is simple logic probe circuit. Logic probe is used to determine if a point in a circuit has high or low state when the circuit is in operation.? Here is....
NAND Gate Clock Generator circuit diagram – Circuit Schematic
NAND Gate Clock Generator circuit diagram
The following diagram is the Clock Generator circuit diagram which build based on NAND Gate logic IC. You may use IC 7400 or 4011 for this circuit. The 7400 is ...
MultiKey - One Wire Keypad – Circuit Schematic
MultiKey - One Wire Keypad
This project can be used for many different purposes. Probably the most used application would be to interface to any electronic project that requires a keypad....
Motorola SN54 Demultiplexer Logic Diagram and Datasheet – Circuit Schematic
Motorola SN54 Demultiplexer Logic Diagram and Datasheet
Motorola SN54/74LS138 known to be 1-of-8 decoder or demultiplexer which is designed for high speed bar memory chip select address decoding. Below diagram illust...
Monolithic/Hybrid Digital to Analog Converters – Circuit Schematic
Monolithic/Hybrid Digital to Analog Converters
Monolithic/Hybrid Digital to Analog Converters using MC 1408IC,SE/NE 5018, Specifications and Applications....
Mini Logic probe with transistor circuit – Circuit Schematic
Mini Logic probe with transistor circuit
This is a Logic probe circuit is one, That is suitable for checking the voltage levels in the TTL circuit. It receives from the circuit being tested. Shows how ...
Logic Probe for Tri-state Logics – Circuit Schematic
Logic Probe for Tri-state Logics
This is a simple circuit of Logic Probe for Tri-state Logics. This circuit can be built only in a few hours. Besides that, this circuit has some other....
Quiz Circuit – Circuit Schematic
Quiz Circuit
I`ve had a few requests for a quiz circuit, so here is a 4 input design which can easily be modified. Maybe, I should write the application notes in the style o...
CMOS Toggle Flip Flop Using Laser Pointer – Circuit Schematic
CMOS Toggle Flip Flop Using Laser Pointer
The circuit below is similar to the one above but can be used with a laser pointer to toggle the relay rather than a push button. The IR photo transistor Q1 (Ra...
Frequency Doubler with 4011 – Circuit Schematic
Frequency Doubler with 4011
This is a circuit of Frequency Doubler using 4011. This circuit uses one CMOS quad, two input NAND gate package type 4011. This circuit consist of two....