Simple Op Amp Radio

This is basically a crystal radio with an audio amplifier which is fairly sensitive and receives several strong stations in the Los Angeles area with a minimal 15 foot antenna. Longer antennas will provide a stronger signal but the selectivity will be worse and strong stations may...

Infrared Remote Control

This circuit will allow you to turn on any piece of equipment that operates on 115 volts ac. The receiver circuit is based on the Radio Shack infrared receiver module (MOD), part number 276-137. It is also available from some of the other sources listed on my Links page. The MOD...

Garage Stop Light

A novel use of solar cells makes positioning your car in the garage rather easier than old tyres, a mirror, or a chalk mark. The six solar cells in figure 1 serve as power supply and as proximity sensor. They are commercially available at relative low cost. The voltage developed...

Small Power Amplifier 8W 8Ω with TDA 2030

Although the TDA2030 can deliver 20 watts of output power, I deliberately reduced the output power to about 8 watts to supply 10 watt speakers. Input sensitivity is 200mV. Higher input levels naturally will give greater output, but no distortion should be heard. the gain is set by...

The worker can simply press the pagedown button of cell phone jammer

The worker can simply press the pagedown button of cell phone jammer . Promise as a wireless presenter products use 2.4G ISM band. The bands product, if less than 1 mW transmit power, is not obtained "Radio Transmission Equipment Type Approval Certificate (SRRC)" The. ISM band that is industrial, scientific...

Electronic Security System

This reliable and easy-to-operate electronic security system can be used in banks, factories, commercial establishments, houses, etc. The system comprises a monitoring system and several sensing zones. Each sensing zone is provided with a closed-loop switch known as sense switch....

Zero Gain Mod For Non Inverting Opamp

Electronics textbooks will tell you that a non-inverting opamp normally cannot be regulated down to 0 dB gain. If zero output is needed then it is usual to employ an inverting amplifier and a buffer amp in front of it, the buffer acting as an impedance step-up device. The circuit...

6 Channel Running Light

The circuit of the running light comprises two integrated circuits (ICs), a resistor, a capacitor and seven light-emitting diodes (LEDs), Decade scaler IC2 ensures that the LEDs light sequentially. The rate at which this happens is determined by the clock at pin 14. The clock is...

SSL3250A PHOTO FLASH LED DRIVER ELECTRONIC DIAGRAM

SSL3250A PHOTO FLASH LED DRIVER ELECTRONIC DIAGRAMThese properties caused this device has long battery life and low power strain. Another features that this device has are protecting the battery and LED from overloading, trouble free operation such as overtemperature, over voltage,...

Simple Battery Discharger Using Discrete Components

The battery discharger published in this website may be improved by adding a Schottky diode (D3). This ensures that a NiCd cell is discharged not to 0.6–0.7 V, but to just under 1 V as recommended by the manufacturers. An additional effect is then that light-emitting diode D2 flashes...

Serial To Parallel Converter

This converter may help if just the serial port on a personal computer is free, whereas the printer needs a parallel (Centronics) port. It converts a serial 2400 baud signal into a parallel signal. The TxD line, pin 3, CTS line, pin 8 and the DSR line, pin 6, of the serial port are...

Simple Battery Isolator

This circuit is even simpler and employs a 6V feed from one of the stator connections on the vehicle’s alternator. This is connected to a 6V automotive relay (RLY1) which controls a Continuous Duty Solenoid (RLY2). This solenoid electrically connects or isolates the batteries. When...

AUTOMATIC AIRFLOW DETECTOR ELECTRONIC DIAGRAM

AUTOMATIC AIRFLOW DETECTOR ELECTRONIC DIAGRAMSensor used in this circuit is a bulb filament. If there is no airflow, the filament resistance would give low value. On the other hand, if there is airflow, the filament resistance would varies. The variation of the resistance is caused...

Loudspeaker Protector Monitors Current

This circuit uses a 0.1O 1W resistor connected in series with the output of a power amplifier. When the amplifier is delivering 100W into an 8O load, the resistor will be dissipating 1.25W. The resulting temperature rise is sensed by a thermistor which is thermally bonded to the...

Fuse Box BMW 328i Central 1999 Diagram

Fuse Box BMW 328i Central 1999 Diagram - Here are new post for Fuse Box BMW 328i Central 1999 Diagram.Fuse Box BMW 328i Central 1999 Diagram Fuse Panel Layout Diagram Parts: ABS system, adjustment driver seat, adjusment passenger seat, air bag, air conditioner, blower, brake light,...

Kawasaki KLR 250 Carb Cleaning Information

If you were to browse any KLR250 related forum the most common ailment youd hear owners complain about is some type of starting or running problem, usually carburetor related. These problems arent biased to just the KLR, any carbureted bike can experience them. Theyre usually due...

Digital Electronic Lock Circuit Diagram

This Digital Electronic Lock Circuit Diagram shown below uses 4 common logic ICs to allow controlling a relay by entering a 4 digit number on a keypad. The first 4 outputs from the CD4017 decade counter (pins 3,2,4,7) are gated together with 4 digits from a keypad so that as the...

00 To 99 Minute Timer Using PIC16F628A Microcontroller

his might be a good practice project for beginners who just started learning embedded electronics. It is about making a very basic programmable digital timer using a PIC16F628A microcontroller. The timer duration can be set from 0-99 minutes.As I mentioned earlier, the microcontroller...

Metal Detector Schematic Using CS209A

A very simple metal detector electronic project circuit can be designed using the CS209A integrated circuit manufactured by Cherry Semiconductor.The CS209A integrated circuit is a bipolar monolithic integrated circuit for use in metal detection proximity sensing applications.The...

AM Receiver Circuit

Description:This is a compact three transistor, regenerative receiver with fixed feedback. It is similar in principle to the ZN414 radio IC which is now no longer available. The design is simple and sensitivity and selectivity of the receiver are good.Circuit DiagramNotes:All...

Simple AC Power Current detector Circuit with LM1458

This circuit will detect power line currents of 250 mA or more without making electrical connections to the line. Current is detected by passing a line of alternating current through an inductive pickup (L1) as a screen diameter of 1 inch U-bolt wound with 800 turns # 30...

Simple 500W Audio Power Amplifier Circuit Diagram with Transistor

We take transistor MJL2194 and MJL2193 for drive output signal.so the amp has a capacity for enormous instantaneous current ability.I think, it is useful for you to apply the circuit with your sound devices.Circuit FunctionalI use the -85 volt when the output current is supplied...

12V Speed Controller Dimmer

This handy circuit can be utilized as a velocity regulateler for a 12V motor rated up to 5A (continuous) or as a dimmer for a 12V halogen or usual incandescent lamp rated up to 50W. It varies the facility to the weight (motor or lamp) the usage of pulse width modulation (PWM)...

Telephone Call Recorder

Today telephone has become an integral part of our lives. It is the most widely used communication device in the world. Owing to its immense popularity and widespread use, there arises a need for call recording devices, which find application in call centres, stock broking firms,...

1998 Toyota Land Cruiser Electrical Wiring Diagram

This is the Official Repair Manual that the dealers and shops use. This is the finest manual available. It is very detailed with good diagrams, photos and exploded views. A must for anyone who insists on Genuine OEM quality parts.you can buy this diagram books at h...

2005 Toyota 4Runner The Rear Windshield Wiper Is Not Working

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 ...

TA7230P TA7236P TA7237AP amplifier schematic

Amplifier circuit here is all based on the ic in the gains. Three IC TA7230P, TA7236P, TA7237AP is intregated circuit (IC) which was applied to the power amplifier. Each IC has a different output, different input voltage, all IC TA7230P, TA7236P, TA7237AP is manufactured by Toshiba.You...

1997 Audi A4 Air Conditioning System Circuit and Schematic Diagram on 1997 Audi A4

The following wiring diagram / scematic shows 1997 Audi A4 air conditioning system Circuit and Schematic Diagram which consists of A/C control head, footwell/defroster, flap motor and sensor, temperature regulator, motronic engine control module,...

Structured Wiring

Structured Wiring Panels Create A Safe Environment For Services To Be.Structured Wiring.Structured Wiring Design.Structured Wiring Jpg.Structured Wiring.Structured Wiring Services Home Audio Video Home Theater.Structured Wiring.Installs Computer Networking Wiring As Part Of...

Thermostat Wiring Informationprothermostats Programmable

Air Conditioner Thermostat Wiring.Thermostat Wiring For Conventional Gas Furnace Air Conditioner Split.Typical Electric Water Heater Construction Wiring Diagram.Thermostat Wiring Information Prothermostats Com Programmable.Thermostat Wiring Issues Doityourself Com Community...