Ads
related to: connecting zener diodes in series
Search results
Results from the WOW.Com Content Network
An alternative, which is used for voltage references that need to be highly stable over long periods of time, is to use a Zener diode with a temperature coefficient (TC) of +2 mV/°C (breakdown voltage 6.2–6.3 V) connected in series with a forward-biased silicon diode (or a transistor B–E junction) manufactured on the same chip. [4]
VR tubes can be operated in series for greater voltage ranges. They cannot be operated in parallel: because of manufacturing variations, the current would not be shared equally among several tubes in parallel. (Note the equivalent behavior with series and parallel connected Zener diodes.)
In electronics, a back-to-back connection is the connection of two identical or similar components in series with the opposite polarity. This is used to convert polarised components to non-polar use. Common examples include: electrolytic capacitors; zener diodes
Since the forward voltage of a diode is small, this kind of voltage regulator is only suitable for low voltage regulated output. When higher voltage output is needed, a zener diode or series of zener diodes may be employed. Zener diode regulators make use of the zener diode's fixed reverse voltage, which can be quite large.
Zener diodes are also frequently used to provide a reference voltage of moderate stability and accuracy, useful for many electronic devices. An avalanche diode displays a similar stable voltage over a range of current. The most stable diodes of this type are made by temperature-compensating a Zener diode by placing it in series with a forward ...
BZ-series silicon Zener diodes (e.g., BZY88C4V7 4.7V Zener diode) Other common numbering/coding systems (generally manufacturer-driven) include: GD-series germanium diodes (e.g., GD9) – this is a very old coding system; OA-series germanium diodes (e.g., OA47) – a coding sequence developed by Mullard, a UK company
In electronics, the Zener effect (employed most notably in the appropriately named Zener diode) is a type of electrical breakdown, discovered by Clarence Melvin Zener. It occurs in a reverse biased p-n diode when the electric field enables tunneling of electrons from the valence to the conduction band of a semiconductor , leading to numerous ...
Here, the load current I R2 is supplied by the transistor whose base is now connected to the Zener diode. Thus the transistor's base current (I B) forms the load current for the Zener diode and is much smaller than the current through R 2. This regulator is classified as "series" because the regulating element, viz., the transistor, appears in ...
Ads
related to: connecting zener diodes in series