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Using Microwave Oven Parts to build a Soldering Iron Heat Controller

Last Updated on March 8, 2019 by Swagatam Leave a Comment

Typical microwave diagram

In this post I have explained how to scavenge discarded microwave oven parts for making a useful soldering iron heat controller circuit which can then be used for maintaining controlled heat over a connected soldering iron tip ensuring safe soldering operations, that may be quite crucial and handy if you are working with SMD parts. […]

Filed Under: Temperature Controllers

2 Useful Energy Saver Solder Iron Station Circuits

Last Updated on January 19, 2025 by Swagatam 23 Comments

In this post I have explained how to build a energy efficient soldering iron station circuit for achieving maximum power saving from the unit, by ensuring that it is automatically switched OFF when not being used for sometime. Written and Submitted By: Abu-Hafss DESIGN#1: OBJECTIVE To design a circuit for solder iron which would not […]

Filed Under: Temperature Controllers

Making a “Helping Third Hand” for Aiding Soldering Jobs

Last Updated on January 1, 2024 by Swagatam 12 Comments

In this post I have explained a step by step construction of a “helping third hand” unit for assisting PCB soldering jobs in order to make the job much hassle free. The gadget could be very handy especially for the new hobbyists. The project was constructed and submitted by Master Ss kopparthy. I have explained […]

Filed Under: Temperature Controllers

Adjustable 1.2V to100V DC Buck Converter Circuit using LM5164

Last Updated on April 25, 2025 by Swagatam Leave a Comment

Ok now we have this LM5164 chip, and we want to drop voltage from 100V down to let’s say 12V, right? But we also need 1A output so we need to design everything properly. Now this chip is cool because it has ultra-low quiescent current (IQ) so it does not waste much power when it […]

Filed Under: Power Supply Circuits

LM35 IC Temperature Controller Circuit with Push Button

Last Updated on February 23, 2024 by Swagatam 238 Comments

LM35 temperture controller circuit diagram with push button

In this post I have explained a simple yet very accurate temperature controller circuit using IC LM35, featuring an automatic cut off with a push button latch. LM35 is a precision temperature sensor IC, which can be effectively used for detecting temperature differences accurately. For more details regarding this IC you can refer to this […]

Filed Under: Temperature Controllers

Mains 220 V AC Line Filter Circuit for Transient Suppression

Last Updated on August 30, 2023 by Swagatam 13 Comments

220 V mains AC filter circuit

The 220 V mains AC line filter circuit described here has two functions: it prevents high-frequency waves from being sent back into the power network and it protects connected equipment from power line disturbances and surges. This circuit employs a number of components, such as capacitors, resistors, inductors, and a varistor, which are deliberately positioned […]

Filed Under: Power Supply Circuits

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