DATASHEET and Circuit Diagram

With a few resistors, LEDs and using a LM3914 bar/dot display driver IC we can construct a simple 5V Voltmeter Monitor Circuit which provides TTL-compatible undervoltage and overvoltage warning signals. A complete circuit can be shown in the schematic below.

This voltmeter monitor circuit is useful where quick and easy voltage adjustments must be made. It may be applied where the overvoltage and undervoltage warning signals provide an attractive extra and also can be used to monitor any higher voltages, positive or negative.

Constructing Voltmeter Monitor Circuit using LM3914 continued »

The following illustration schemes MM74HC165 parallel-in/serial-out 8-bit shift register pin assignment diagram. According to the datasheet, this device utilizes advanced silicon-gate CMOS technology.

This device able to be clocked through the inputs at each functioning gate (NOR, CLOCK, CLOCK INHIBIT, SHIFT/LOAD – as seen in the pin assignment schematic). All inputs are protected from damage due to static discharge by internal diode clamps to VCC and ground. The 74HC logic family can functionally worked as well as pin-out compatible with the standard 74LS logic family, according to the MM74HC165 datasheet.

MM74HC165 Pin Assignment Diagram and Datasheet continued »

A theory related on DC Motor Speed Controller includes the speed control application circuits are described in the following document. In order to take a signal representing the demanded speed, and to drive a motor at that speed, a motor speed controller is needed.

What you will find in the depth of the document are sections such as Theory of DC motor speed control, The action of inductive loads, and inductors, PWM frequency, Choosing a frequency based on motor characteristics, Speed control circuits, Regenerative Braking Circuit, Reversing DC Motor, The Full Bridge Circuit, Generating PWM signals (using 74HC14, 74HC163, LM324), Current limiting circuit, and Feedback Speed Control.

DC Motor Speed Controller Theory and Circuits continued »

The schematic below shows TLE5206-2 5A H-Bridge for DC Motors Circuit Application. It such a device which has an integrated power H-bridge with DMOS output stages for driving DC-Motors, according to the datasheet.

TLE5206-2 Circuit Application describes Input Circuit, Output Stages, Undervoltage Lockout, setting of the Error Flag in Protective Function (Output Shorted to Ground Detection, Output Shorted to + VS Detection, Overload Detection, Over Temperature Protection).

TLE5206-2 H-Bridge Circuit Application and Datasheet continued »

SA58631 is single-channel audio amplifier which generates a power output of 3 W with an 8-Ω load using a 9V supply. The herein schematic appears SA58631 Audio Amplifier Block Diagram.

The SA58631 has a Bridge Tied Load (BTL) amplifier with a complementary PNP-NPN output stage and on-chip logic for standby and mute. It can be switched to standby and mute conditions through the MODE pin. For such those features, this SA58631 device is a fine choice for portable applications (mobile radios, toys, games, and PC sound cards, and more).

SA58631 Audio Amplifier Block Diagram Schematic continued »

The schematic below appears Electronic Siren Circuit Diagram using 741 versatile IC. The siren can be used as the home alarm output or automobile security system.

This Electronic Siren Circuit Diagram is built by semiconductors and components such as 741 Operational Amplifier (IC1,IC2), AC187 – T1, AC188 – T2, Resistors R1-1M ohms, R2-8 100K Ohm, Capacitors C1-0.1uF, C2-0.01uF, C3-100uF 25V electrolytic and Ls1 8 Ohm 1W Speaker.

Electronic Siren Circuit Diagram using 741 Op Amp IC continued »