Трансформатор для тестера стабилитронов

When building a simple zener diode tester or ESR probe, the most complex component of the circuit is the transformer. In this video, I'll show you how I wind this transformer. If you're inexperienced or simply don't want to bother with winding it, you can use a ready-made transformer from a mobile phone charger. You'll learn how to connect it in the video.