transistor circuit diagram | Next Electronics

This is a simple transistor-based burglar alarm circuit. Its features include automatic exit and entry delays, along with a timed bell cut-off and reset. It is designed to be used with common types of normally-closed input devices such as magnetic-reed...

Bipolar Transistor HBridge Motor Driver

Schematic, breadboard photo, parts list, and results of several transistor variations on the classic bipolar H-bridge motor driver circuit. The classic bipolar H-bridge motor driver circuit is a widely used configuration that allows for the control of DC motors in both...

A lamp flasher circuit using transistors

If you require a small lamp that flashes for general use, there are numerous options available. Today, three lamp flasher circuits will be presented. The three lamp flasher circuits can be designed using different components and configurations, each offering unique characteristics...

Single Transistor Half-Wave Peak Detector Circuit

Using only a single transistor and a few passive components, a fairly sensitive peak detector circuit can be built. This peak detector circuit is suitable for various applications. The peak detector circuit utilizes a single transistor, typically configured in a common-emitter...

1 Transistor Toggle Relay schematic

The circuit below requires a double pole, double throw relay in conjunction with a single transistor to allow toggling the relay with a momentary push button. One set of relay contacts is used to control the load, while the other...

Common collector amplifier circuit DC and AC path b

A common collector amplifier circuit can be analyzed through its DC and AC paths. The DC path provides a bias circuit for the power transistor, determining whether it is in an active or off state, primarily influenced by the biasing....

The NOT gate

The single-transistor inverter circuit discussed earlier is too simplistic for practical use as a gate. Real inverter circuits utilize multiple transistors to enhance voltage gain, ensuring that the final output transistor is either in full cutoff or full saturation, while...

An Expandable Transistor Based Burglar Alarm circuit

This transistor-based alarm features automatic exit and entry delays, along with a timed bell cut-off and system reset. In addition to the exit/entry zone, the basic alarm board includes one instant zone, which is sufficient for many applications. However, the...

Micro Inverter by 2N6121

This micro inverter is a small-sized device that modifies energy from a battery, producing an output voltage of approximately 220V AC at 50Hz. The circuit comprises two transistors that function as a pulse oscillator or square wave generator, driving a...