The main part of this circuit is the LM386 amplifier chip. It also uses a transistor input to buffer the input signal and provide extra gain for the LM386. The little unit has helped me out on numerous occasions when trouble shooting any amplifier circuit like a stereo receiver, tv / vcr audio section,...
1999 Chevrolet Chevy Tahoe Wiring Diagram
1999 Chevrolet Chevy Tahoe Wiring DiagramThe Part of 1999 Chevrolet Chevy Tahoe Wiring Diagram: power distribution cell, gauges, linkconnector, diesel, fuse block, steering ctrl, vehicle, engine ctrl, powertrain ctrl module, steering wheel position signal, case ctrl, passlock sensor, scurity lamp,...
Four Stage FM Transmitter
This FM transmitter circuit uses four radio frequency stages: a VHF oscillator built around transistor BF494 (T1), a preamplifier built round transistor BF200 (T2), a driver constructed round transistor 2N2219 (T3) and a power amplifier built around transistor 2N3866 (T4). A condenser microphone...
0 30 Volt Power Supply
linear power supply, shown in the schematic, provides 0-30 volts, at one amp, maximum, using a discrete transistor regulator with op amp feedback to control the output voltage. The supply was constructed in 1975-6 & has a constant current mode that is used to recharge batteries.With reference to...
Light Switch Wiring
Light And Outlet 2 Way Switch Wiring Diagram.Wire How To Wiring Diagram Single Switch And Light Alternate.How To Wire A Switch Switch And Light At End Of Circuit.Two Way Light Switch Wiring.Wiring A Light Switch For A Ceiling Light Diy Project.Honda Civic Hybrid Fog Light Wiring Circuit Schematic...
Alternator Bracket Mounting Line Wiring
Do This An Nothing Else.Alternator Regulator Troubleshooting.Alternator Bracket For The Top Mounting About 15 On Line The Wiring.1994 Saturn Sl2 Problem New Alternator Bad Electrical 4 Cyl Front.6610s Alternator Wiring Yesterday S Tractor Co.Thread Toyota Alternator Install.Image Hosting Free...
Battery Charger with Temeperature Sensor
Battery with a LM35 temperature sensor on the charger used to monitor the battery temperature is in charge. Battery temperature sensor is needed because the battery temperature will rise at the time in charge. Battery temperature sensor LM35 temperature sensor has high accuracy in monitoring the battery...
Light Dependent Resistors
LDRs or lightweight Dependent Resistors are terribly helpful particularly in light/dark sensor circuits. Normally the resistance of an LDR is incredibly high, typically as high as a thousand 000 ohms, however once they are illuminated with lightweight resistance drops dramatically. The animation...
Solar Powered SLA Battery Maintenance
This circuit was designed to ‘baby-sit’ SLA (sealed lead-acid or ‘gel’) batteries using freely available solar power. SLA batteries suffer from relatively high internal energy loss which is not normally a problem until you go on holidays and disconnect them from their trickle current charger....
Honda XL100 Electrical Wiring Diagram
Honda XL100 Electrical Wiring DiagramThe Part of Honda XL100 Electrical Wiring Diagram: high beam indicator, meter light, speedometer, tachometer, fuse, headlight control switch,silicon rectifier, wire harness, tail light, sub cord, tail/stop light, condenser, contact breaker, spark plug, horn, turn...
Digital Object Counter using LDR and digital IC 7490
This is the simple circuit on Hobby Electronics. In this circuit three modules are used in object counter. 555 timer are used as a monostable mode and astable mode. The other is counter module.In this circuit 555 timer
configured as a monostable mode, is a simple automatic dark sensor
circuit that...
10 000x With One Transistor
For a collector follower with emitter resistor, you’ll often find that the gain per stage is no more than 10 to 50 times. The gain increases when the emitter resistor is omitted. Unfortunately, the distortion also increases. With a ubiquitous transistor such as the BC547B, the gain of the transistor...
1994 Lumina APV Van Wiring Diagram
1994 Lumina APV Van Wiring DiagramThe Part of 1994 Lumina APV Van Wiring Diagram: camshaft position sensor, hall effect, sensor ground,amplifier, instrument cluster, red wire, bypass switch, control reference, ignition module control, electronic ignition module, powertrain control module, spark reference...
RGB Solar Lamp
This deluxe solar-powered light uses a battery and solar cells salvaged from a solar lamp with a four-cell battery (4.8 V nominal terminal voltage). Circuit diagram : RGB Solar Lamp Circuit DiagramThe circuit can operate from any DC voltage around this value and its current...
Simple Remote Control Tester
Nearly always when a remote control doesn’t work, the underlying problem is elementary: the unit does not emit light. The cause may be dry solder joints, defective LEDs etc., but also a flat battery (perhaps due to stuck key). The human eye is unable to perceive infra-red light. By contrast, an ordinary...
1983 Ford Thunderbird Wiring Diagram
1983 Ford Thunderbird Wiring Diagram (click for full size image)The Part of 1983 Ford Thunderbird Wiring Diagram :windshield, wiper, motor, windshield washer pump, fuse block, stop light switch, backup light switch, neutral safety switch, blower motor, oil press switch, condenser, breaker, temp.gauge(eng.unit),...
Wireless FM Transmitter
The wireless fm transmitter circuit described here has an extra RF power amplifier stage, after the oscillator stage, to raise the power output to 200-250 milliwatts. With a good matching 50-ohm ground plane antenna or multi-element Yagi antenna, this wireless fm transmitter can provide reasonably good...
6V Ultra Bright LED Chaser
This is a spectacular but completely useless project. It lights Ultra-Bright LEDs in a sequence and each LED flashes brightly very briefly. The LEDs light-up going around and around since they are mounted in a circle (on a CD), then they pause before chasing again. The...
Crowbar Speaker Protection
Crowbar circuits are so-called because their operation is the equivalent of dropping a crowbar (large steel digging implement) across the terminals. It is only ever used as a last resort, and can only be used where the attached circuit is properly fused or incorporates other protective measures.A crowbar...
Video Out Coupling
If you want to connect a video signal to several destinations, you need a distribution amplifier to match the 75-ohm video cable. A distribution amplifier terminates the incoming cable in 75 ohms and provides several outputs, each with 75-ohm output impedance. Since this is usually achieved by putting...
Laptops Cord Stays off Your Lap with this Clip
Someone just got this trick works on all the uni body Mac Books and helps keep your wires and cord under control.This clip is especially bendy if you are lounging on the sofa with the power-cord-side in towards the cushions. It keeps your MacBooks power cord under control with this trick and...
