Technology World

21/08/2026

Video Test

21/08/2026

រួចមួយ

OCP
DCP
LIMITOR
XLR

20/08/2026

Preparing the final installation

20/08/2026

Dropping down PWM frequency to 120KHZ

19/08/2026

DIY SMPS កំពុងល្បី តុយយក្ស

Primary: 0.5mm x 20 rows
Secondary: 0.4mm x 24 rows

Output: +-110VDC

ខ្លាំងតុយយក្ស!

18/08/2026

DIY CLASS D 2K27

17/08/2026

1Ω Loads CLASS D 2K27

👉MOSFETs = 10 × IRFP460A
👉Topology = Half-bridge
👉Supply = +-110V DC initially
👉DC bus = 220V
👉PWM frequency = 150kHz
👉Gate driver = IR2110 with totem poles
👉High side = 5 × IRFP460A parallel
👉Low side = 5 × IRFP460A parallel
👉Gate resistor = 47Ω each
👉Gate-source resistor = 10 kΩ each
👉Dead time 200 ns

* ✅ Very large voltage safety margin
* ✅ Lower risk of voltage overshoot causing MOSFET failure
* ✅ Lower switching stress

16/08/2026

SMPS
* 320 VDC input
* 100 kHz half-bridge
* 1 x ETD59
* 20T primary(0.5mm x 20 in Parallel)
* 14T + 14T secondary ( 0.4mm x 24 in Parallel)
* ±110 VDC output
* 10 x IRFP460A as the SMPS switching MOSFETs
* 4 x DSEC60-06A

16/08/2026

SMPS

20/06/2026