# Tag Info

### Switching losses in a power supply

The transformer will indeed present as an inductive load (two of them, actually) to whatever is driving the primary. if there is a resistive load across the secondary, then there will also be a ...
• 25.9k

### Problems of optimal commutation depending on number of pole

The problem you have with 2 pole pairs is that the construction of the rotor and the stator are such that for every North pulled by the stator there is a South which is, instead of 180° from that ...
• 9,692

### How to connect dissimilar but close logic voltages between a chips logic out and a chips input enable pins

From what I can read on page 2 of the MAX913 datasheet, the Low output value is a maximum of 0.5V (not -1.6v) and output +3.4V. Furthermore, And on page 4 of the UCC27424P, the Enable pin voltage ...
1 vote

### BJT: definition of "edge of saturation"

It's a combination of device properties, and a wave of the hand. As seen in the other answers, Vce can only go so low. For most modern devices, 0.4V is a reasonable guess, and that's basically all ...
• 896

### BJT: definition of "edge of saturation"

The 0.4 V value is not so much a definition but an observation. This is from onsemi's BC547 datasheet: In the active region, the curve is almost vertical; in the saturation region, the curve is ...
• 14.3k
Accepted

### BJT: definition of "edge of saturation"

It has to do with practical teaching vs theoretical, I suppose. For Silicon PN junctions, pretty much anything below a forward-biased magnitude of $400\:\text{mV}$ produces currents that are ...
• 69k