| 2-Way Active Loudspeaker | electronic 3w crossover | 3 Way Active Loudspeaker |
| Audio auto fade | Audio Preamplifier with Digital Volume | balance with gain | Module Line amplifiers | Parametric Mid EQ |
| Phonon RIAA Preamplifier | Remove signal from stereo sound | Variable High Pass Filter | Audio MIXER 6+ channel in | Balance to balance |
| Mic-line balance | Moving Coil head preamplifier | Phone 2 | Preamplifier with adjustment tone | Surround Sound Decoder |
| 2 Watt Amplifier | FM Transmitter | 4 Transistor Transmitter | 8 Note Tune Player | 8 Watt Audio Amp |
| 22 Watt Audio Amplifier | 50 Watt Amplifier | AM Receiver | Audio Line Driver | Little Bridged Power Amplifiers |
| Crystal Radio |
DC Protection / Time Delay for Loudspeaker
|
Digital Volume Control | Door phone Intercom | Electronic Stethoscope |
| FET Audio Mixer | FM Transmitter | Guitar Fuzz Effect |
HAFLER DH-200 Audio Power Amplifier |
Microphone Mixer |
| Op Amp Radio |
High Power Amplifier 300W |
Power Amplifier with STK40xx Series Module |
Power amp 100W with V-MosFet |
Loudspeaker Protection 2 for P.A output |
| Sound Level Meter | Stereo Tube Amplifier | Tone Control Circuit | Tone Control | Transistor Organ |
| AMPL | 20 Watt Power Amplifier | Color Organic | FM STEREO Transmitter | STEREO Mixer |
| SIGNAL TRACER |
plays back a voice
|
Add-On Stereo Channel Selector |
Infrared Cordless Headphone |
Long-range FM Transmitter |
| SCANNER | RF Transmitter & Receiver Module | IN–CAR AIR IONIZER | ELECTRONIC EAVESDROPPING DEVICES DETECTOR | |
|
Musical ‘touch’ bell |
3_way_active_loud_main_pcb | 3_way_active_lsp_crossover_pcb | Low-Frequency Amplifier TA8215H-A (60W) amp |
| WIRE SCAN | Automatic Headlight Brightness Switch | auto door open | Electronic Night Light | INFRARED for DOOR |
| Neon Desk lamp | PBS Switch | RECHARGE | REMOTE ROBOTICS | ROBOTICS REMOTE |
| Sound Operated Switch | Wireless Auto Tachometer | Auto Shut-off For Cassette Players And Amplifiers | Automatic Speed-Controller for Fans and Coolers | Automatic Heat Detector |
| BIKE LIGHT FLASHER | Blown Fuse Indicator | Hand Clap Electronic Control | ||
| Dual-Channel Digital Volume Control | Headlight Flasher | IR Remote Control | 4 switch combination LOCK | AC MOTOR SPEED CONTROL |
| 3 different types of siren | Sleep-switch cum Wake-up Timer | Automotive Speed Indicator | STROBE LIGHTER | Sun - Up Alarm |
| Touch 'N Flip | touch switch | touch switch | Under-/Over-Voltage Beep for Manual Stabilizer | Tri-Waveform Generator |
| Precision attenuator with digital control | Precision Amplifier with Digital Control | Quick Draw | Radio Remote Control | AUDIO SHUT-OFF |
| Car Voltage Gauge | CAR WATER THERMO |
Voltmeter with LED for car battery |
RFI FILTER FOR THE CAR | |
| Auto flash stop | Car 12V battery charger | Car Lamb Failure switch | Power amplifier 2X18W with TDA1516Q | Voltmeter with LED for car battery |
| JV FAX INTERFACE | Palm / Mobile Access Control System on Chip TS1001 | INTERFACE PC | Computer Microphone | IRDA |
| AUDIO CONTROL | Extra keyboard to your PC |
THE BRUSHLESS MOTOR |
Mini Stereo AUDIO MIXER MIC-LINE for PC Audio Card | FOURTH APLIF |
| RS-232 Laser Transceiver | Simple Parallel (Printer) Port Interface | UNIVERSAL IRDA | SYNC BOX VGA | 3-Axis Stepper Controller |
| 4-CHANNEL 8-BIT ANALOG-TO-DIGITAL CONVERTER FOR PC | 8-channel 12-bit analog-to-digital converter | EPROM emulator for 2732 / 2764 for PC's | A TWO-CHIP I/O EXPANDER FOR IBM PC PARALLEL PRINTER PORT |
low cost analog I/O extension board for PC's |
| LIGHT CHASER | BREAK RESET CIRCUIT | Centronics port D/A converters and low-pass filter | Control electrical appliances using PC | Covox Speech Thing Driver for Windows 3.1 and Multimedia Windows |
| Electrical Equipment Control UsingPC |
A / D Converter - 4 Digit |
Intercom | VGA CABLE | MIDI connector box for the Sound blaster card |
| Mini Stereo AUDIO MIXER MIC-LINE for PC Audio Card |
Mouse (PS/2) Pin Name Description |
PC IR Remote Control Hardware | PARALLEL PORT | SERIAL PORT |
| ISA BUS | PC/Logic-related ASCII | CHIP LIST | PC IR Remote Control | Frequently Asked Questions About PIC84PGM |
| PIC16C84 programmer schematic | all the pins of a parallel printer port | MAKING YOUR PC PARALLEL PORT BI-DIRECTIONAL | Trend HSR500 (or UDR700) - PC printer port interface | Stepper motor control via parallel port |
| Looking for that Sound-Blaster to MIDI circuit again |
|
MPX Stereo Decoder Collection - TDA1578 |
Stereo Decoder - CA3090Q |
MPX Stereo Decoder - MC1310P |
MPX Stereo Decoder - LM1800N |
|
Acoustic Tone by command |
Digital Ping - Pong |
Digital Roulette |
Electronic Dice | Electronic Dice |
|
Electronic Siren |
Switch ON-OFF touch or with push button |
Frequency Divider |
Frequency doublers with 4069 |
Frequency_divider_with_7490 |
|
Frequency Doublers with 4011 |
Frequency doublers with 4069 |
Frequency Multiplier X100 with Noise
Rejection for low frequency |
Melody Door Ringer |
Programmable Frequency Divider with 7490 |
|
Security Door electronic Key 1 |
Electronic Security Door Key 2 | 15-Step Digital Power Supply | DTMF Proximity Detector | Simple Analog-to-digital Converter |
| Analog-to-digital Converter | 8 BIT Analog-to-digital Converter | RC_MODEL |
| 16C84 processor | PIC12C08/PIC12C508A Programming | Adaptor "P" to
"TURBO v6" programmer. For Serial EPROM & PIC |
Digital Power Meter with PIC 16F876 | HEX-code for the PIC16F84 (INHX8M format) |
| PIC16C5X/XX programmer | Pcr1000 panel keyboard | PCR1000 CONTROL PANEL | The Win NT programmer software 16f84 |
| Example quadrifilar GPS antenna | GPS jammer schematic. | Libor's RF probe schematic | New GPS jammer schematic |
|
Audio Peak Indicator |
Mini Audio Analyzer |
VU Meter 1 |
VU Meter 2 |
|
VU Meter 3 |
VU Meter 4 |
VU Meter 5 with UAA180 |
Charge Monitor for 12V Rechargeable Lead-acid Battery |
| 12 Volt 30 Amp PSU | Dual Regulated Power Supply |
Fuse Monitor / Alarm |
Increasing Regulator Current |
| L200 Regulator Circuit | LASER Power Supply | Logic PSU with Over Voltage Protection | NiCad Battery Charger |
| Power Supply | Voltage Regulator | Rectification using a Gyrator Circuit | Simple 5V power supply |
| Transformer less Power Supply | Universal DC-DC Converter | Variable Power Supply | Variable Voltage Regulation |
| 3-30 V/2.5 A STABILIZED VARIABLE POWER SUPPLY | INVERTER 12 VDC TO 220 VAC | 2-30 V/5 A STABILIZED POWER SUPPLY | 12V TO 120V INVERTER |
| 220/240V LIGHT DIMMER | Magnetic Proximity Switch | DC power supply | DC power supply WITH LM78XX |
| Precision Digital AC Power Controller | Protection for your Electrical Appliances | Infrared Remote Control | Simple Low-Cost Digital Code Lock |
| Ultra Low Drop Liner Regulator | HIGH_VOL |
RMA I-F TRANSFORMER LEAD COLOR CODE |
| 5 Zone Alarm System | ALARM FIRE | ALARM CONTROL KEYPAD | Frost Alarm | CAR ALARM SYSTEM |
| Miniature Loop Alarm | The alarm will sound your car horn | Clever Rain-Alarm | House Security System | Luggage Security System |
| Simple Code Lock |
| Digital
Up/Down Selector for 8 Sources |
Electronic Selector for 8 Sources |
Electronic Selector for 8 Sources |
Electronic Selector for 10 sources with Display-Relay Drive |
Temperature Window switch |
|
Electronic Switch ON-OFF touch or with push button |
Light
sensitive and differ dial temperature switch |
Over and
under voltage switch with relay |
Sel 8
Sources Relay |
Signal
and Tone Activated Relay Switch |
| Touch
Button |
Voltage
window switch |
| Clue engaged
telephone line |
Cut Phone Line Detector | FM Telephone Bug | DOOR PHONE | Phone Busy Indicator |
| Ringing Phone Light Flasher | Simple Phone
Tap |
Telephone Recorder | Telephone Hold Button | Telephone Line
Monitor |
| Telephone Line
Ring and Indicator |
2-Line Intercom-Cum-Telephone Line Changeover | 9-Line Telephone Sharer | Cellular phone | Cordless Phone Backup |
| Phone "Hold" With Music | INTERCOM | Phone In Use Indicator | Low-cost Transistorized Intercom | Low-Cost PCO Billing Meter |
| Multipurpose Circuit For Telephones | Parallel Telephones with Secrecy | Phone Broadcaster | Portable cellular phone jammer | Telephone Conversation Recorder |
| Telephone Line Based Audio Muting and Light-On Circuit | Telephone Ringer using Timer ICs | Telephone Call Meter Using Calculator And COB | Teleremote Control | scrambled voice |
| Electromagnetic Field Probe with Meter Output | Function Generator | Gate Alarm | IR Remote Control Tester | Infra Red Remote Control Extender |
| Logic Probe | Sqaure Wave Oscillator | Zener Diode Tester | TTL audible logic probe | plant moisture meter |
| Transistor Checker | Versatile Zener Diode Tester | VU Stereo Meter |
| Macro vision remover | Video Transmitter | Audio / Video Distribution Amplifier | CABLE TV | NTSC___N |
| PARTS TV | Program VGA_to_SCART | TV_DRVTV | TV Remote Blocker | TV Repair TEC DISK |
| VCR Repair TEC DISK | VGA2PALN | VGA2PALV | VGAPCBPS |
| Macro vision remover | Video amplifier | Video amplifier | Video signal emphasis | Video Transmitter |
| Video Distribution Amplifier |
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