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Precise One Shot Circuit – Circuit Schematic
Precise One Shot Circuit
This approach uses a Hip-Hop, a shift register, and two gates (A). Before the one-shot pulse, the output of the NOR gate is 0. Consequently, the data input of ...
Logic Pulser Circuit – Circuit Schematic
Logic Pulser Circuit
The logic pulser generates pulses at 500 Hz or 0.5 Hz. When the pulser`s.tip connects to an input that is already being driven high or low, the pulser senses t...
Optical Direction Discriminator Circuit – Circuit Schematic
Optical Direction Discriminator Circuit
The very simple circuit uses only two CD4001 packages, i.e., eight NOR gates and operates in the following way: Pulse streams are fed to an RS flip flop genera...
Optocoupler circuits – Circuit Schematic
Optocoupler circuits
This circuit is a TTL-to-TTL isolator circuit. The driver circuit is an open-collector TTL inverter (Ul). When the input is high, then the output of the invert...
Pseudo-Random Bit Sequence Generator Circuit – Circuit Schematic
Pseudo-Random Bit Sequence Generator Circuit
In this circuit, an additional exclusive-OR gate is connected after the modulo-2 feedback, with CI and R2 applying the supply turn-on ramp into the feedback lo...
Four-Input Minimum Maximum Selector Circuit – Circuit Schematic
Four-Input Minimum Maximum Selector Circuit
This circuit outputs the maximum (or the minimum) of the four input voltages Vv V2, V3, and V4. Each of these input voltages is in the range 0 to 5 V. The outp...
Audible Logic Tester Circuit – Circuit Schematic
Audible Logic Tester Circuit
The tester provides an audible indication of the logic level of the signal presented to its input. A logic high is indicated by a high tone, a logic low is ind...
Simple Digital Logic Probe Circuit – Circuit Schematic
Simple Digital Logic Probe Circuit
The design of the digital logic probe centers around a pair of complementary bipolar transistors, which, in this application,...
Electronic Slot Machine Circuit – Circuit Schematic
Electronic Slot Machine Circuit
The slot machine`s realistic action is provided by seven ICs and three displays, as shown. Two 555 CMOS timer ICs generate pulses. IC1 is used to generate the ...
4511B Common-Anode Display Driver Circuit – Circuit Schematic
4511B Common-Anode Display Driver Circuit
The use of a switching transistor (like a 2N2222 or 2N3904) allows use of the CD4511B with a common-anode display. should be chosen to provide about 1 mA to d...
7-Segment (Led) Display Driver Circuit – Circuit Schematic
7-Segment (Led) Display Driver Circuit
An IC1 like a 7447 drives a 7-segment common anode LED display. Current, limiting resistor R should limit the segment current to the rated value at maximum sup...
7-Segment Common-Cathode Led Display Driver Circuit – Circuit Schematic
7-Segment Common-Cathode Led Display Driver Circuit
A CD4511B CMOS LED display driver can be used to drive a common cathode LED display. Current limiting resistors limit the segment current to the rated value at...
Digital To Analog Converter Circuit – Circuit Schematic
Digital To Analog Converter Circuit
Figure A is an R/2R resistor ladder. Each switch that is closed increases the amount of current at . A simple channel A/D converter is shown in Fig. B. The vol...
S/R Flip-Flop – Circuit Schematic
S/R Flip-Flop
This circuit combines the characteristics of an asynchronous S/R flip-flop and an edge-triggered JK flip-flop. It changes sta...
Low-Power Ring Counter (Less Than 6 Mw) – Circuit Schematic
Low-Power Ring Counter (Less Than 6 Mw)
The ring counter operates from 1.0 to 6,0 V and requires only 6 mW at 1.5 V. The reset pulse turns ...
Logic Probe – Circuit Schematic
Logic Probe
By connecting this circuit to a logic device that"s under power, you can get an indication as to its status. If the circuit is ...
S1Ngle-Ic Logic Probe – Circuit Schematic
S1Ngle-Ic Logic Probe
This logic probe uses a CD4009 CMOS hex inverter. The characteristic high-input impedance of CMOS gives the advantage...
4-Way Logic Probe – Circuit Schematic
4-Way Logic Probe
This logic probe has four channels and uses two IF quad comparators to drive four bicolor LEDs. SI and SIB program the co...
Logic Tester – Circuit Schematic
Logic Tester
The input consists of two comparators that operate with different reference voltages supplied by separate potential dividers. ...
3Input And Gate Comparator – Circuit Schematic
3Input And Gate Comparator
This circuit has high output only when all three inputs are high. The noninverting-input current, when all thre...