CSI Premier 75W and Hakko 936 Solder Station Teardowns
https://www.electronics-lab.com/csi-premier-75w-and-hakko-936-solder-station-teardowns/
Todd Harrison @ toddfun.com did the teardown of the CSI 75W solder station as well as the Hakko 936: The Hakko of course had all analog circuits using operational amplifiers and potentiometers as well as a temperature sensor in the iron tip to signal back to a triac chip controller which would trigger the triac to […]
Basic Types of Thyristors and Applications
https://www.electronics-lab.com/basic-types-of-thyristors-and-applications/
In this article we will discuss about the various types of thyristors. Thyristors are 2 pin to 4 pin semiconductor devices that act like switches. For example a 2 pin thyristor only conducts when the voltage across its pins exceeds the breakdown voltage of the device. For a 3 pin thyristor the current path is […]
4 Channel Triac Board
https://www.electronics-lab.com/4-channel-triac-board/
Opto-Isolated 4-Channel Triac Board (R) is used for fast switching applications. Ideal for switching mains circuits, lights, appliances and small load. Each circuit is effectively isolated with opto-isolators on each channel, TTL inputs control each channel. Trigger input 2-12 VDC Mains supply input 230 VAC or 110 VAC Output 1 A @ 230 VAC (RMS […]
Triacs – How to calculate power and predict Tjmax
https://www.electronics-lab.com/triacs-how-to-calculate-power-and-predict-tjmax/
An application note from NXP on how to calculate the power dissipated by the triac: This Application Note describes how to calculate the power dissipation for triacs and Silicon Controlled Rectifiers. Thermal calculations are also included to help the circuit designer to predict the maximum junction temperature or calculate the required heatsink thermal resistance. Four […]
WIFI Mains Power Dimmer / Switch
https://www.electronics-lab.com/wifi-mains-power-dimmer-switch/
MAINS Power Dimmer / Switch Module project by Tracker J: Now it’s about time to talk also about what many of you has asked for: DIMMING! It’s a total different story, little bit complicated but, as you will see, not so hard to understand. General considerations: There are several types of dimmers generally available. These […]