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IC Chips: 74 series Digital Integrated Circuits; CD40 series Digital Integrated Circuits; Optical Couplers; Clock & Calculator ICs; Operational Amplifiers; Power Switch Ics; Driver Ics; Flash Memory; Memory; Audio Special Purpose; Clock/Timing - Application Specific; Clock/Timing - Clock Buffers, Drivers; Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers; Clock/Timing - Delay Lines; Clock/Timing - IC Batteries; Clock/Timing - Programmable Timers and Oscillators; Clock/Timing - Real Time Clocks; Data Acquisition - ADCs/DACs - Special Purpose; Data Acquisition - Analog Front End (AFE); Data Acquisition - Analog to Digital Converters (ADC); Data Acquisition - Digital Potentiometers; Data Acquisition - Digital to Analog Converters (DAC); Data Acquisition - Touch Screen Controllers; Embedded - CPLDs (Complex Programmable Logic Devices); Embedded - DSP (Digital Signal Processors); Embedded - FPGAs (Field Programmable Gate Array); Embedded - FPGAs (Field Programmable Gate Array) with Microcontrollers; Embedded - Microcontroller, Microprocessor, FPGA Modules; Embedded - Microcontrollers; Embedded - Microcontrollers - Application Specific; Embedded - Microprocessors; Embedded - PLDs (Programmable Logic Device); Embedded - System On Chip (SoC); Interface - Analog Switches - Special Purpose; Interface - Analog Switches, Multiplexers, Demultiplexers; Interface - CODECs; Interface - Controllers; Interface - Direct Digital Synthesis (DDS); Interface - Drivers, Receivers, Transceivers; Interface - Encoders, Decoders, Converters; Interface - Filters - Active; Interface - I/O Expanders; Interface - Modems - ICs and Modules; Interface - Modules; Interface - Sensor and Detector Interfaces; Interface - Sensor, Capacitive Touch; Interface - Serializers, Deserializers; Interface - Signal Buffers, Repeaters, Splitters; Interface - Signal Terminators; Interface - Specialized; Interface - Telecom; Interface - UARTs (Universal Asynchronous Receiver Transmitter); Interface - Voice Record and Playback; Linear - Amplifiers - Audio; Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps; Linear - Amplifiers - Special Purpose; Linear - Amplifiers - Video Amps and Modules; Linear - Analog Multipliers, Dividers; Linear - Comparators; Linear - Video Processing; Logic - Buffers, Drivers, Receivers, Transceivers; Logic - Comparators; Logic - Counters, Dividers; Logic - FIFOs Memory; Logic - Flip Flops; Logic - Gates and Inverters; Logic - Gates and Inverters - Multi-Function, Configurable; Logic - Latches; Logic - Multivibrators; Logic - Parity Generators and Checkers; Logic - Shift Registers; Logic - Signal Switches, Multiplexers, Decoders; Logic - Specialty Logic; Logic - Translators, Level Shifters; Logic - Universal Bus Functions; Memory - Batteries; Memory - Configuration Proms for FPGAs; Memory - Controllers; PMIC - AC DC Converters, Offline Switchers; PMIC - Battery Chargers; PMIC - Battery Management; PMIC - Current Regulation/Management; PMIC - Display Drivers; PMIC - Energy Metering; PMIC - Full, Half-Bridge Drivers; PMIC - Gate Drivers; PMIC - Hot Swap Controllers; PMIC - Laser Drivers; PMIC - LED Drivers; PMIC - Lighting, Ballast Controllers; PMIC - Motor Drivers, Controllers; PMIC - OR Controllers, Ideal Diodes; PMIC - PFC (Power Factor Correction); PMIC - Power Distribution Switches, Load Drivers; PMIC - Power Management - Specialized; PMIC - Power Over Ethernet (PoE) Controllers; PMIC - Power Supply Controllers, Monitors; PMIC - RMS to DC Converters; PMIC - Supervisors; PMIC - Thermal Management; PMIC - V/F and F/V Converters; PMIC - Voltage Reference; PMIC - Voltage Regulators - DC DC Switching Controllers; PMIC - Voltage Regulators - DC DC Switching Regulators; PMIC - Voltage Regulators - Linear; PMIC - Voltage Regulators - Linear + Switching; PMIC - Voltage Regulators - Linear Regulator Controllers; PMIC - Voltage Regulators - Special Purpose; Specialized ICs
Modules: IGBT; IPM; Thyristors; Rectifiers; Power Supply; Smart Power Module; SCR,GTO and Diode; FET; Darlington Transistors; RF Modules; CNC PRODUCTS; ENCODER; Motor; Servo drive & amplifier & Servo; Diode Module; Transistor Module; Switch Relay; PLC; Inverter; Contactor & Breaker; Elevator Board; Industry Control
Transistors: Diode; Bipolar transistors

Resistors: Carbon Film Resistors; Cement Resistors; Chassis Mount Resistors; Chip Resistor - Surface Mount; Current Sense Resistors; Fusible Chip Resistor; High Precision & Low TCR SMD Resistors; High Voltage Resistor; LED Strip Resistors; MELF Resistor; Metal Alloy Resistors; Metal Film Resistor (TH); Metal Glaze Resistors; Metal Oxide Film Resistors; Metal Oxide Resistors; NTC Thermistors; PTC Thermistors; Photoresistors; Potentiometers & Variable Resistors; Precision Potentiometer; Resistor Networks & Arrays; Resistor Networks & Arrays (TH); Ultra Low Resistors (SMD); Variable Resistors; Varistors; Wirewound Resistors
Capacitors: Aluminum Electrolytic Capacitors - SMD; CL21 Capacitor; Ceramic Disc Capacitors; High Voltage Capacitors; Metallized Polyester Film Capacitor; Multilayer Ceramic Capacitors MLCC - Leaded; Multilayer Ceramic Capacitors MLCC - SMD/SMT; Mylar Capacitor; Niobium Oxide Capacitors; Polyester Film Capacitors; Solid Polymer Electrolytic Capacitor; Supercapacitors & Ultracapacitors; Suppression Capacitors; Tantalum Capacitors; Trimmers, Variable Capacitors
Inductors & Ferrite Beads & Transformers: Antennas; Current Transformers; General Inductors (TH); HF Inductors; Inductors (SMD); LINE Filter; Power Inductors; Power Transformer; RJ45 Transformer; Radial Inductor (TH); The circular inductors
Crystals: 49S; 49SMD; 49U; Ceramic Resonators; DIP Oscillators(XO); Radial Cylinder Crystals; SAW Resonators; SMD Crystals; SMD Oscillators(XO)
Connectors: AV Connectors; Audio & Video Connectors; Banana and Tip Connectors; Card Edge Connectors; Circular Connectors; Connector - Card Sockets; Connectors; Connectors - Accessories; Connectors - Housings; Contacts; D-Sub Connectors; Ethernet Connectors/Modular Connectors; FFC, FPC (Flat Flexible) Connectors; Fiber Optic Connectors; IC & Component Sockets; LED Light Pipes; Mezzanine Connectors (Board to Board); PCB Connectors - Headers, Male Pins; PCB Connectors - Headers, Receptacles, Female Sockets; PCB Connectors - Housings; Power Connectors; RF Connectors/Coaxial Connectors; Shunts & Jumpers; Terminal Blocks - Accessories; Terminal Blocks - Barrier Blocks; Terminal Blocks - Din Rail, Channel; Terminal Blocks - Headers, Plugs and Sockets; Terminals; Test Clips; Test Points/Test Rings; USB Connectors; Unspecified Connectors; Screw-type wiring; Spring-type wiring; Pluggable Terminal Blocks; Through-wall Terminal Blocks; Automotive Terminals; Terminal Housings, Insulation Sleeves & Blocks; Quick Disconnect Wire Connectors and Terminals; Spare & Wear Tooling; Automotive Connectors; PCB Connectors

SFP Transceivers: 100BASE SFP; 1000BASE SFP; CWDM SFP; DWDM SFP; BIDI SFP; SONET/SDH SFP; 2G/4G FC SFP; Customized SFP
SFP＋ Transceivers: 10G SFP＋; BiDi SFP＋; CWDM SFP＋; DWDM SFP＋; 8G/16G FC SFP+; Customized SFP+
XFP Transceivers: 10G XFP; BIDI XFP; CWDM XFP; DWDM XFP; Customized XFP
40G/100G Transceivers: 40G QSFP+; 100G QSFP28; 100G CFP; 100G CFP2; 100G CFP4; 25G SFP28; 100G CXP; Customized 40G/100G; 40G BiDi QSFP+
Active Optical Cables: 10G SFP+ to SFP+ AOC; 40G QSFP+ to QSFP+ AOC; 40G QSFP+ to 4xSFP+ AOC; 40G QSFP+ to 8xLC AOC; 100G QSFP28 AOC; Customized AOC; 25G SFP28 AOC; 100G QSFP28 to 4xSFP28 AOC; 56G QSFP+ to QSFP+
Direct Attach Cables: 10G SFP+ to SFP+ DAC; 40G QSFP+ to QSFP+ DAC; 40G QSFP+ to 4xSFP+ DAC; 25G SFP28 to SFP28 DAC; 100G QSFP28 to QSFP28 DAC; 100G QSFP28 to 4 SFP28 DAC; Customized DAC; 56G QSFP+ to QSFP+
Fiber optic HDMI cable
Optical Fiber Patch Cable: MTP/MPO Plenum Trunks; MTP/MPO-LC Plenum; MTP/MPO LSZH Trunks; MTP/MPO-LC LSZH; OM4 40 100Gb 50/125 Multimode; OM3 10Gb 50/125 Multimode; OM2 50/125 Multimode; OM1 62.5/125 Multimode; OS2 9/125 Singlemode Simplex; OS2 9/125 Singlemode Duplex; OM5 40G 100G 50/125 Multimode; Switchable LC Cables; Uniboot LC Cables; Ultra Low Loss LC SMF; Ultra Low Loss LC MMF; BIF Fiber Cables; Armored Patch Cables
Other Transceivers: Converter Modules; 3G/HD-SDI SFP; GBIC Transceivers; PON Transcievers; Transceiver Accessories

Temperature Sensors: Temperature Control Switch
Temperature and Humidity Sensor
Dust Sensor: PM2.5 Sensor
Gas Sensor: Combustible Gas Sensor; Alcohol Sensor; CO Sensor; Hydrogen Sensor; H2S Sensor; CO2 Sensor; Ammonia Sensor; Formaldehyde Sensor
PIR Sensor
Flow Sensors
Pressure Sensors
Other Sensor: Heart Rate Sensor; Optical Sensor; Color Sensor; Ultrasound Sensor; Magnetic Field Sensor; Electric Current Sensor; Voltage Sensor; Liquid Level Sensor; Atmospheric Pressure Sensor; Weather Sensor; Tilt Angle Sensor; Gesture Sensor; Touch Sensor; Flame Senor; Vibration Sensor; Speed Sensor

Fuses: Fast Blow Ceramic Fuses; Fast Blow Glass Fuses; Automotive Fuses; SMD PPTC Resettable Fuses; DIP PPTC Resettable Fuses

LED modules: High-Power LED; SMD LED; LED backlight; COB LED; LED Display; Plug In LED; Infrared Induction; Piranha LED; LED Bulbs; Light Emitting Diode
LED Illuminant Chip: Led Epitaxial Wafers; Red-Light LED; Orange-Light LED; Yellow-Light LED; Green-Yellow Light LED; Green-Light LED; Blue-Light LED; Purple-Light LED; White-Light LED; Other LED Illuminant Chip
LED Displays

Switches: DIP Switches; Mouse Micro Switches; Pushbutton Switches; Rocker Switches; Round Switches; Self-locking & Lock-free Switches; Proximity Switch
Relays: Contactors; Circuit Breakers; Relays
Photoelectric Switches
Buck Converter
Power Interver

Wires & Cables
Battery Case
Brass Screw Bolt
Tools
Security system accessories
Breadboard
Power Adapter
Health Care

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You choose: Other DIY Project Electric pen

2018-05-30 Update: DIY simple non-contact electric pen, judging neutral and live wire

The electric pen we usually used is very inconvenient and dangerous as must contact live wires, but it can be easily solved with such a triode amplifier circuit. Just need to close to or touch the rubber surface of the wire to judge whether it is charged (AC only).H-shaped inductor instead of contacts.This size can be stuffed into the shell of some electric pens.

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DIY 40G 40G QSFP+ optical transceiver module module SFP+ 100G optical transceiver CWDM transceiver AOC cable Optical Transceiver 10G BIDI 10G SFP+ DAC 25G op QSFP+ AOC cables Data center fiber optic optical Fiber Fiber-Optic Transceiver Module 100G QSFP28 DWDM 1270 nm 1610 nm DAC Cables XFP XFP optical XFP module MTP/MPO Cables SFP 10G DAC cable Direct Deal Electric pen DIY socket tester Sensor cable Optical Network Cable Hand Crank Generator stc SCM DDM Fiber Optic Cable Remote control

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