Tips for novices: teach you a good way to solder perfboard

This article uses a perforated board preamplifier (imitating MBL6010) as an example to discuss the perforated board welding method. I will also provide some photos of the finished product. I hope you can give me some advice.

Of course, the circuits I will introduce below are all simple ones , which are relatively easy to succeed, and interference and self-excitation are less likely to occur.

1. Follow the trend: imitation MBL6010 preamplifier

Two or three years ago, the trend of imitating MBL6010 was in full swing in the forum . I was still a young kid, but I also followed the seniors and DIYed a set. This thing was made quite seriously back then!

Preparation:

Making of perforated board First, you need to find all the materials you need, and then you can arrange the layout. The key is to choose a universal board with better quality, like the one I use. (Personally, I feel that square pads are easier to operate than round pads)

Then, arrange the components in a reasonable way, make them beautiful, easy to route, and have reasonable electrical distribution. Solder the pins of the arranged components first:

Generally, the smaller ones are installed first, and then the larger ones. After welding, you can cut the legs:

To clarify: Not all pins need to be cut off. Some can be bent down for routing. However, the disadvantage of doing so is that it is inconvenient to disassemble. It depends on personal preference.

Then, I started to route the wires. Since I often make OO boards, I have some experience in routing: when routing, first put a small single branch wire on the route to be taken, and then apply solder. This method is not only convenient for routing and beautiful, but also can save most of the solder. I call it the buried wire method. The single branch wire can be stripped from the small wire, or even the cut resistor pin can be used, but it must be dipped in tin, and enameled wire will definitely not work.

Generally, the large ground line is used first when routing:

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Be careful not to loop the ground! If the line is too long, you can add a few points in the middle to fix it:

Then, follow the pre-designed route:

When soldering, sometimes some wires are too thin and are prone to thermal expansion and contraction, causing the wiring to be misaligned, especially when the two ends are fixed first and then the middle wire is soldered (please pay attention). See the effect:

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Not bad, here is a family photo: (the right side is the buffer, the middle is the power supply, and the left side is the main amplifier)

2. Some finished pornographic photos:

1. This power supply has been powered on and tested, and the effect is very good!

2. An op amp pre-stage:

(power supply)

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3. I didn’t expect to find a graduation project drawing: (a digital voltmeter, 4.5 digits, with high accuracy)