![The image captures an indoor scene, likely a classroom or laboratory in Stara Zagora, Bulgaria. A whiteboard, oriented vertically, is prominently featured, covered with handwritten notes and diagrams related to electronics.
The notes include various electrical formulas such as Ohm's Law (U=I.R, P=U.I=I².R) and equations for calculating voltage across resistors. A circuit diagram depicts a transistor (BJT) with resistors (R1, R5, Rv1) and voltmeters (V1, V2, V3) connected, along with positive and negative test points. Transistor characteristics are also noted, including formulas for current gain (β=Ic/Ib) and voltage gain (Ko=U_изх/U_вх > 1).
A table presents experimental data with columns for base current (I_B_MA) at 20 and 40 mA, and corresponding base-emitter voltages (U_BE[V]) at 0.55 and 0.58 V. Another equation for collector current, I_C = (U_PS-1 - U_CE) / R5, is visible, along with numerical values like "2BkA" and "10^-3 / 10^-6 = 1". A small graph is also sketched.
To the right, partially obscuring the whiteboard, is a black monitor or screen. Below it, several pieces of electronic equipment with blue and silver heatsinks are visible, suggesting the presence of power supplies or other electronic devices used for experiments or demonstrations.](https://firebasestorage.googleapis.com/v0/b/patr-3a75e.appspot.com/o/uploads%2Fimage_picker_e609b671-f731-44e3-a.jpg?alt=media)
Stake attention in this memory
The image captures an indoor scene, likely a classroom or laboratory in Stara Zagora, Bulgaria. A whiteboard, oriented vertically, is prominently featured, covered with handwritten notes and diagrams related to electronics. The notes include various electrical formulas such as Ohm's Law (U=I.R, P=U.I=I².R) and equations for calculating voltage across resistors. A circuit diagram depicts a transistor (BJT) with resistors (R1, R5, Rv1) and voltmeters (V1, V2, V3) connected, along with positive and negative test points. Transistor characteristics are also noted, including formulas for current gain (β=Ic/Ib) and voltage gain (Ko=U_изх/U_вх > 1). A table presents experimental data with columns for base current (I_B_MA) at 20 and 40 mA, and corresponding base-emitter voltages (U_BE[V]) at 0.55 and 0.58 V. Another equation for collector current, I_C = (U_PS-1 - U_CE) / R5, is visible, along with numerical values like "2BkA" and "10^-3 / 10^-6 = 1". A small graph is also sketched. To the right, partially obscuring the whiteboard, is a black monitor or screen. Below it, several pieces of electronic equipment with blue and silver heatsinks are visible, suggesting the presence of power supplies or other electronic devices used for experiments or demonstrations.
Symbol
E609B
Volume
11,605
Creator
+$0.00
Revenue
+$0.00
TVL
$2.94
Loading AttnAds…
