The semiconductor tester circuit I have explained below performs continuity tests on SCRs, bipolar transistors, and diodes. How the Circuit Works A squarewave oscillator with a frequency of about 350 Hz is produced by a couple of IC 4049 gates, U1a along with U1b, R1, R2, and C1. The complementary outputs required for testing both NPN and […]
Transistor
Easy Two Transistor Circuit Projects for School Students
A variety of small school projects can be built using just two transistors. This compilation includes a collection of practical and fascinating circuit ideas using just a few number of parts. Any small signal transistor can be used in the proposed two transistor circuit, such as BC547, 2N2222, 2N2907, BC108, BC107, TIP32, TIP31, 188, 8050, […]
BC547 Transistor Datasheet [45V, 100mA NPN Transistor]
BC547 is a 100 V, 200 mA, NPN transistors, which is a general purpose small signal transistor. The following paragraphs discuses the datasheet of BC547 transistor for a quick reference. Pinout Configuration The following diagrams shows the pinout configuration and the symbol of the transistor BC547: Absolute Maximum Ratings: Electrical Characteristics: Equivalents 2N2222: Another typical […]
BC636 Transistor Datasheet [45 V 1 Amp PNP Transistor]
The BC636 is a PNP bipolar junction transistor (BJT) that is specifically designed for low noise amplifier and switching applications. Here’s the complete datasheet of the transistor BC636. Pinout Configuration Referring the pinout diagram above, the BC636 transistor 3 pinouts. Electrical Characteristics: Package Details: Operating Conditions: The maximum operating temperature for the BC636 is 150°C. […]
TIP127 Datasheet [100V, 5 Amp PNP Darlington Transistor]
The TIP127 is a PNP Darlington transistor commonly used for high-power switching applications. Here is the complete datasheet for this transistor: Electrical Characteristics: Thermal Characteristics: Pin Configuration: As shown in the above figure, the TIP127 transistor has three pins: the collector (C), the base (B), and the emitter (E). The pinout configuration is as follows: […]
TIP122 Datasheet [100V, 5 amp, NPN, Darlington Transistor]
The TIP122 is an NPN Darlington pair transistor that is commonly used in power switching applications. It has a high current gain and can handle up to 5A of continuous current. Here is the complete datasheet for the TIP122 transistor: Electrical Characteristics (Do not exceed these specifications): Package Type: The TIP122 transistor is available in […]