DATASHEET and Circuit Diagram

The following schematic shows 12 W Bridge Amplifier circuit diagram as an application of the TDA2007A a class AB dual audio power amplifier which is designed for stereo application in music centers, TV receivers and portable radios.

According to the datasheet, this TDA2007A has features such high output power, high current capability, AC short circuit protection, and thermal overload protection.

Stereo 12W Bridge Amplifier Circuit Diagram using TDA2007A continued »

We can interface two DC motors which can be controlled in either clockwise and counter clockwise rotation. A schematic example for interfacing a DC motor using L293D is provided herein:

As seen in the circuit above, A , B, Enable pins are needed for interfacing a DC motor. In order to make the motor work, you may connect Enable to VCC and only 2 pins needed from controller, it will make the operation to be enabled completely.

Interfacing DC Motor using L293D Circuit Schematic continued »

Since bipolar stepper motor gives more torque and costs less than an equivalent unipolar motor, the use of monolithic  bridge drivers become very useful for simplifying bipolar motors. The herein circuit shows basic configuration for bipolar stepper motor driving which can be applied using either an L293 or an L298N.

In this basic bipolar stepper motor driver circuit diagram, it is assumed that a suitable translator is connected to the four channel inputs. This circuit shows that a single device can be used to drive a two phase bipolar stepper motor.

The herein schematic appears MAX242 Multichannel RS-232 Drivers/Receivers Pin Configurations diagram. The pin configuration schematic outlines TTL/CMOS inputs – outputs, RS232 inputs/outputs, Ground, Voltage Doubler, and Voltage Inverter.

MAX242 is one of MAX220–MAX249 family of line drivers/receivers for all EIA/TIA-232E and V.28/V.24 communications interfaces. They are used to be applied in applications such as Portable Computers, Low-Power Modems, Interface Translation, Battery-Powered RS-232 Systems, and Multidrop RS-232 Networks, according to the MAX242 datasheet .

MAX242 Multichannel RS-232 Drivers/Receivers Pin Configurations and Datasheet continued »

The following circuit schematic illustrates voltmeter hookups for voltage drops testing of a General Motors (GM)-type cranking circuit. As we know, voltage drop is the drop in voltage that happens when current is flowing via resistance. In voltage drop testing, low voltage drop shown low resistance and high voltage drop means high resistance.

The voltage drop testing circuit above shown:
V      = Voltmeter
V1    = Testing + Battery Cable
V2    = Testing  – Battery Cable
V3    = Testing Solenoid

Voltage Drop Testing of General Motors Type Cranking Circuit continued »

A schematic described Resistor Color Code and Chart Diagram appears in the following illustration. Resistor is such a device for a two-terminal electronic component that produces a voltage  across its terminals that is proportional to the electric current passing through it in accordance with Ohm’s law (wikipedia.org).

This electronic color code was developed in the early 1920s. In the Resistor Color Code and Chart, Resistor values are always coded in Ohms. The chart outlines resistor color code (black, brown, red, orange, yellow green, blue, violet, grey, white, and gold), 4/5-Bands Code (1st, 2nd, 3rd, multiplier and tolerance).