2022年4月13日 · As far as I know, potential difference (voltage), that's mean it needs two point to measure it. Then what does vc or ve only or vb only? If vce means potential between vc and ve? And what does ve o...

2017年1月18日 · A bipolar transistor looks like a diode between B and E to the rest of the circuit. For a ordinary silicon transistor, that is usually 550 to 750 mV or so, depending on current and temperature.

2018年10月13日 · The voltage VBE across the forward-biased junction is very low (for a germanium transistor, VBE = 0.3 V; and for silicon transistor, VBE = 0.7 V). This requires that the battery voltage Vbb must also be of the same order

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2017年8月1日 · VBB = 2V. After the transmission line, the AC coupling caps remove the DC common mode of the driver so that Voh = 0.2V and Vol = -0.2V, correct? I assume VBB sets the common mode of the receiver at 2V, so does that mean the inputs to the receiver are: Vih = 2 + 0.2V and Vil = 2 - 0.2V? And also is the bypass capacitor on VBB absolutely ...

2024年6月11日 · \$\begingroup\$ Steam, unless you have already selected a very specific NPN model (and all associated models that relate to it, such as the saturation current model over temperature and device physics) and know all of the device parameters for that model, and know the die temperature, there's no way you can calculate the precise model-derived values.

2014年11月4日 · Vbb is normally called Vbe. Unless Vbe is positive there will be no collector current. (for an npn) Simple models assume a transistor is a current controlled device, but the next level up, you will find it's often better to think of it in terms of Vbe, Ebers-Moll equation and all that. \$\endgroup\$

Vbb - reference voltage for ECL used in single-ended input mode or for some types of termination. Usually you bypass to Vcc and tie the differential input that's not being used to Vbb, or tie inputs through back-to-back Schottky diodes to Vbb. Some devices have a Vbb output or it can be generated with an ECL gate.

Here I don't get why VC > VB is necessary. Actually, it is not : If the transistor is saturated, you can have (for example) Vbe=0.6V and Vce =0.3V.

2022年8月23日 · Why do we still have a collector current when Vbb < 5.7 V. Because a saturated switch requires on/off base drive. It's not some comparator circuit that detects when you're past a threshold and sharply turns on then. [...] is there a relationship between the base voltage and the Vcc voltage? Yes! The Ebers-Moll model does a good job of ...