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BT134 Triac – 600V – 4A (BT134-600E) Triac they are used in AC switching and control applications with current ratings from under 1A to 40A rms. Since TRIACs are bi-directional switching devices they are commonly used for switching AC applications. It has Maximum Terminal current: 4A, Max Terminal Voltage is 600 V, Gate trigger current: 25mA & On-state Gate voltage: 1.7V.
The BT139 is a TRIAC thyristor, which is a type of semiconductor device that can use to control alternating current (AC) power. TRIAC thyristor BT139 is a four-quadrant device, meaning that it can conduct current in either direction. The BT139 has a peak inverse voltage (PIV) of 800 volts and a current rating of 16 amperes. It is a sensitive gate triac, meaning that it can be triggered with a low gate current. The on-state voltage drop of the BT139 is 1.2 volts. Here are some of the key features of the BT139-800E 4 Quadrant TRIAC:
The CD4024 is a 7-stage ripple-carry binary counter. Buffered outputs are externally available from stages 1 through 7. The counter is reset to its logical 0 stage by a logical 1 on the reset input. The counter is advanced one count on the negative transition of each clock pulse.
The IC CD4026 is an IC which can perform the function of both a counter as well a 7-segment Driver. One single IC can be used to count form zero (0) to nine (9) directly on a Common Cathode type 7-segment display. The count can be increased by simply giving a high clock pulse; also more than one digit (0-9) can be created by cascading more than one CD4026 IC. So if you have a 7-segment (CC) display on which you have to display numbers that are being counted based on some condition then this IC will be a perfect choice.
The CD4050 hex buffers are monolithic complementary MOS (CMOS) integrated circuits constructed with N- and P-channel enhancement mode transistors. These devices feature logic level conversion using only one supply voltage (VDD). The input signal high level (VIH) can exceed the VDD supply voltage when these devices are used for logic level conversions. These devices are intended for use as hex buffers, CMOS to DTL/ TTL converters, or as CMOS current drivers, and at VDD = 5.0V, they can drive directly two DTL/TTL loads over the full operating temperature range.
The 4077 is a quad 2-input EXCLUSIVE-NOR gate. The outputs are fully buffered for the highest noise immunity and pattern insensitivity to output impedance. The 4077 operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input.
The CD4081 quad gate is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement mode transistors. They have equal source and sink current capabilities and conform to standard B series output drive. The devices also have buffered outputs which improve transfer characteristics by providing very high gain. All inputs protected against static discharge with diodes to VDD and VSS.
Specifications:
DS1302 is a tickle-charge timekeeping chip which contains a real-time clock/calendar and 31 bytes of static RAM. DS1302 uses serial communication to interact with microcontrollers. Also, it automatically adjust the date for the month with fewer days. Clock operates in 24hr or 12hr format with an AM/PM indicator. DS1302 chip is also commonly used as DS1302 RTC module which comes with a 32 kHz crystal and on-board battery backup all in a small SIP module that is compatible with a breadboard. DS1302 module are used by makers with Arduino, Raspberry Pi and other Micro-controllers.
The DS1307 serial real-time clock (RTC) is a lowpower, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply.
512 bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground
. Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike
. Built-in multidrop controller ensures compatibility with other MicroLAN products
. EPROM partitioned into two 256-bit pages for randomly accessing packetized data
. Each memory page can be permanently write-protected to prevent tampering
. Device is an “add-only” memory where additional data can be programmed into EPROM without disturbing existing data
. Architecture allows software to patch data by superseding an old page in favor of a newly programmed page
. Reduces control, address, data, power, and programming signals to a single data pin
. Directly connects to a single port pin of a microprocessor and communicates at up to 16.3 kbps
. 8-bit family code specifies DS2501 communications requirements to reader
4N35 optocoupler consists of gallium arsenide infrared LED and a silicon NPN phototransistor.Isolation test voltage 5000 VRMS. Input-output coupling capacitance < 0.5 pF . 4N35 optocoupler consists of gallium arsenide infrared LED and a silicon NPN phototransistor.Isolation test voltage 5000 VRMS. Input-output coupling capacitance < 0.5 pF . 4N35 optocoupler consists of gallium arsenide infrared LED and a silicon NPN phototransistor.Isolation test voltage 5000 VRMS. Input-output coupling capacitance < 0.5 pF .
EPROM 27C16 is a high speed 16K UV erasable and electrically reprogrammable CMOS EPROM ideally suited for applications where fast turnaround pattern experimentation and low power consumption are important requirements The 27C16 is packaged a 24-pin dual-in-line package.Access time down 450 ns Low CMOS power consumption Active Power 25 mW max Standby Power 53 mW max (98% savings) Performance compatible to NSC800TM CMOS microprocessor Single 5V power supply Pin compatible to MM2716 and higher density EPROMs Static no clocks required TTL compatible inputs outputs TRI-STATE output Windowed DIP Package Specifications guaranteed over full military temperature range 125 C).
Transformer 12V 600mA 
CD4033 Decade Counter IC 
SN74LS138 Demultiplexer IC 
SN74125 Buffer & Line Driver IC 
DB3 - DIAC DO-35 Glass diode 
