| NTSC(YC/RGB) to VGA Scan Converter | Metal Detector or Gold Detector |
| Alarm Sepeda motor Anti Maling-Sederhana | Car Audio with Mp3+X over+Power Amplifier |
| Alarm Sepeda motor Anti Maling (IC555) | Amplifier 150watts OCL |
| Alarm Sepeda motor Anti Maling | Amplifier TDA2030 |
| 200mW Amplifier | Sirine Elektronik |
| 32 Watt Amplifier | TRIAC Light Dimmer |
| 24 Watt Class A Amplifier | Light/Dark Detector |
| PT2350 tone control circuit | LED Thermometer |
| TDA7850 car power aplifier | Led VU Display (IC LM3915) |
| LM383 audio power amplifier | Amplifier 50watts (IC L8063) |
| STK433-730-E 60 watt stereo power audio amplifier | Saklar Penunda Waktu (time delay rellay)II |
| 4 channel car amplifier using TA8259H | Saklar Penunda Waktu (time delay rellay) |
| BA5406 2x3 watts stereo audio amplifier | Saklar Sentuh |
| LM2876 40W audio power amplifier | Detektor Kebohongan Sederhana |
| Cheap Metal Detector | Detektor Hujan |
| Electronic auto Stethoscope | Ultrasonic Dog Whistle |
| Baxandall Tone Control Revisited | Simple Surround Sound Decoder |
| Xenon Strobe | Surround Processor |
| Monitor Splitter | Gitar Effect (Fuzz) |
| Digital Tone Control 2 | Digital Delay Unit For Surround Sound |
| Guitar Control | Digital Volume Control |
| Stun Gun dengan IC555 | Flyback Transformer Driver |
| Nicad Battery Charger | Car Battery Charger |
| 6V to 12V Converter | Voltage Inverter |
| 25W Mosfet audio amplifier | Amplifier Tabung |
| Spectrum Analyzer 3 chanel | Mixer Audio |
| Electronic Stethoscope | Sub Woofer Pre-Amp |
| Digital Tone Control | 50 Watt Amplifier |
| Amplifier Gitar | Bass Amplifier 60watts |
| Amplifier OTL | Mega Bass Pre Amp |
| 3 volt mini Amplifier | Amplifier Stereo IC 2004 |
| Amplifier 300watts | Amplifier 600Watts Darlington |
| UPS Mini | Lampu Neon DC12volt |
| Pengusr Tikus Elektronik | Alarm Anti Maling (motor) |
| Sensor Tandon Penampungan Air | Sensor Lampu Parkir dengan Infra Red |
| Detektor Asap dengan LDR | Indikator Aki (Accu 12volt) |
| Alarm Kebakaran | Sketsa pengusir serangga-insect repellant |
| Stun Gun (Senjata kejut listrik) | Skema OCL Amplifier |
| Skema Mini Amplifier Sederhana | Converter DC to AC |
| Skema Pengusir Nyamuk Elektronik |
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