Free Simple Circuit Diagram
To maintain constant current of D1 at 2 mA, this circuit uses combination of negative and positive feedback, unaffected by ambient temperature variation and unregulated input voltage inconsistency. Reference voltage of 6.6 V is scaled up to give higher volatage level at output of A1. This reference voltage is determined by breakdown voltage of 1N4611 zener. The scaled output has […]
Read more
Variable adjustable voltage source is very important in electronic testing and experiment, no matter whether it’s just for hobby, professional research, or exploring new electronic circuit design. A very low voltage source sometimes is needed, and the following schematic diagram show such circuit, a 0-5V adjustable voltage source with very good stability: [National Semiconductor Application Note]
Read moreLow voltage reference is important to provide offset source or biasing, or just a reference for comparator, and its adjustable feature should suit this circuit for many type of applications. [Source: National Semiconductor Application Note]
Read more
This is a simple circuit of low power regulator reference. This circuit can produces stable voltage reference. The voltage reference that is produced by this circuit almost free of supply voltage hash. This circuit has typical power supply rejection go over 100dB. Here is the circuit : [Source: National Semiconductor Application Note]
Read more