Many individuals became acquainted with the transistors synchronization method through me several months ago, either by hearing about it or hearing directly from me. Among the concepts absorbed, understanding the “transistor matching” process, particularly in terms of amplif ier and transistor equalization, emerged as crucial. It became apparent that this process holds significance not only in audio electronics but also in power electronics and various other applications.
In the realm of BJT or MOSFET transistor amplifier circuits, both NPN and PNP transistors collaborate in the output stage. Alternatively, some circuits exclusively employ NPN transistors.
The aforementioned illustration demonstrates a scenario in an amphitheater example, highlighting the importance of equalizing transistor groups. While it might not be deemed obligatory, ensuring parity in quality and performance proves beneficial in various contexts. In fact, some international websites and eBay listings offer synchronized transistor packages from specific manufacturers, designed to be utilized in circuits where synchronized transistors are imperative.
The simplest is the normal measurement with the multimeter, for example, for Bjt transistors, the 2 transistors should be identical with the Beyer and Emitter, the Collector values should be the same or very close.
for example, in digital multimeter, the A transistor should be the same or very close value in the measurement between BC and 670 in the other.
A more robust guarantee method with a few resistance connections to provide voltage measurement.
The resistors used for a healthy measurement of transistors must be 1% tolerant by measuring the voltage at the VC approx
Calculating the hFE value of transistors;
VRB = Voltage between ground resistance
VRC = Voltage between collector resistance
Baseline flow : IB = VRB / RB
Collector current : IC = VRC / RC
hFE = IC / IB
hFE = (VRC / RC) * (RB / VRB)
Mosfet synchronization;
I = 20mA ⇒ R1 = 560 5
No matching is required for these devices; The VGS is between 4-4.6V and that they work.
VGS at about 170mA. 2W resistor, or two at 100W at 1W resistors in parallel. P-channel devices. P-channel devices.
match VGS to 0.30 in. VGS divided by 5mA. VP1GS is 100mV, then 0.1 / 0.005 = 20,. You would then be able to use the MOSFET source with the lower VGS.
Enhanced Power Supply Alternatives: Simple power supply concept: Common alternatives to a 'quick and dirty' power supply include the three-pin… Read More
Logic Level Display on the Seven-Segment Tester: This tester employs a seven-segment common-cathode display to indicate whether the input is… Read More
Power-Off Circuit for Load Disconnection: The power-off circuit serves the crucial function of automatically disconnecting any load from a battery.… Read More