pMOS transistor in (reverse bias) and (forward = bias) mode

1 اردیبهشت 1403 - خواندن 2 دقیقه - 171 بازدید




Note:  The pMOS junction transistor is an NPN transistor, hence the collector and emitter remain open when the base is held to ground (reverse biased) and closed when a signal is applied to the base (forward biased). Bios).

The pMOS junction transistor   has a gain value of h  fe  50.  This value determines the amplification capacity of the transistor.  The maximum current that can pass through the collector pin is 100 mA, so we cannot connect loads that consume more than 100 mA using this transistor.  When this transistor is fully active, it can flow up to 100mA in the collector and emitter.  This stage   is called  saturation zone .  By removing the base current, the transistor is completely turned off, this stage  is  called  cut-off region .



The pMOS junction transistor is known for current junction operation in signal processing circuits and telecommunications receivers.  The transistor is still available in the market because it is old, but you can replace the pMOS junction transistor with better modern transistors.



Applications The  pMOS junction transistor  in the circuit  is typically used for switching amplifier and very high frequency (VHF) applications. It is made of silicone material and is specially designed for low voltage, low to medium and low current amplifier applications.pMOS junction transistor   provides a continuous DC collector current of 800mA. This means that it has a high collector, so it is mostly used in circuits that require low to medium current. It operates at a high transfer frequency value of 250 MHz with a 10 NAN delay, a rise time of 25 ms, a latch time of 225 ms, and a fall time of 60 ms. It is very easy to use.