For a long, long time ago, there was a legend in the camera circle: If you say that tripod, you have to buy the third one to get the right one. It's better to omit the first two, and you can buy the most affordable one. Ok. However, on the road of life, many times, although you know where your destination is, you still have to experience it yourself before you can miss the scenery along the way. speak English. OK, I'm actually poor, I can't afford to be too expensive. 09 Pentax KX just listed, I entered a double cap, bought a Benro's A-550EX tripod, plus 550 yuan Yuntai, and later play M43, now playing Dafa home Ah 7M2, have been used With this shelf, stability, there are no problems with my several cameras. Anyway, I can't afford to use a cannon that is similar to the 300, 600, and so there is no desire to upgrade the tripod. In the past two years, I often travel on business. Every time I bring a camera to work, I like to go out and pat the night scenes of various cities at night. Because the A-550EX can not be folded, the length of storage is relatively long, the business trip is not very good, so every time you take a picture, you can only put the camera on the railing or find a desk or something. There is also a recent interest in building climbing. It is also not easy to climb buildings on a large shelf, so the idea of ​​buying a mini tripod was born. é‚ äº¬ 京 京 京 京 京 京 京 京 , , , , , , , , , , , , , , , , , , , , , , , 京 京. In recent years, the mini-tripod, Ma Xiaolu MT01's reputation is good, began to consider this, and later that it can not stretch the foot tube, and sometimes need high-angle shot point small things, it is inconvenient, so the last ruled out, Still pick this kind of leg tube can be retractable. The set of Q166A with self-timer lever is 328 and the one without self-timer lever is 258. I thought about it. I had used 18 octopus racks before, and there was no problem with the 30-second long exposure. So this small, sturdy little shelf should have less stability than the octopus. The difference is, so there's no need to buy too expensive, so Q166A is better (don't say, you're poor). Packaging did not shoot, open directly. The tripod bag is long enough to hold the unipod that doubles as a selfie stick. If it is only with a tripod, this bag is still not portable enough to find another small cloth bag. Camouflage bag I do not like it, always feel strong sense of the cottage, big brands are mostly black bags are relatively low-key. Tripod storage length 210mm, not much longer than the camera, the weight of the official target is 962g, portability is very good. The minimum working height is approximately 210mm, which is the same as the storage length. The extension of the leg tube is still very smooth. The maximum working height is about 550mm. In addition to the night scene, many other scenes are enough to use, such as pat still life. Compact size and micro-single are well matched, the official nominal maximum weight 5Kg, now I only have 55 1.8 and 28 2.0 two heads, the body plus either of these two did not exceed 1Kg, that is, use 70-2002.8 GM, also 2Kg Left and right, load-bearing has enough redundancy. The axis can be inverted and it is also convenient for some macro shooting needs. PTZ is a 3/8-inch screw hole with a sphere of 30mm, and there is no problem in using the locking force without anti-system. Tightening will not be a bit of a head. The 360° panorama is now standard on the PTZ, and the rotation is smooth. The anti-skid aprons of the pan/tilt knobs are set up. This type of design may have a long time and the apron may deteriorate and loosen, which is not as reliable as the all-metal knob. The leg angle control buckle adds a lot of damping oil, oil often sticks to the hand, and the oil is too much. After a long time, it will gradually become dusty and become dirty and black, so I remove the 3 foot tubes and put Rub off some of the oil and leave it a little bit so that the tabs do not dry out. After reading the stand body, take a look at this monopod that is not a part-time self-timer. The above Xiaoyuntai bearing only 1Kg, the official said to the mobile phone, card machine, small DV use, but I installed the camera stability is still possible, anyway, the monopod is not used to do long exposure, is to hold The camera assists, so there is no problem if this small pan-tilt is screwed directly onto the camera. The monopod is equipped with a conversion screw, which can be used to replace the small pan-tilt with the big pan-tilt, but I think the trouble of twisting and twisting, and the monopod's use of the big pan-tilt is also not meaningful, and it is sufficient to use the small pan-tilt directly. Now. Buckle-type foot pipe lock, workmanship is very general, there are burrs on the edge, nozzles everywhere, the plastic feels thin. In contrast, Benro's plate locks are thicker and have smooth edges. On the surface, it seems that there is no technical content for the tripod. Everybody's looks no different, but in the details, such as the foot tube lock, such as the aforementioned PTZ knob, it shows the gap between the small brand and the old brand. . Twist down the pan-tilt bearing plate of the center shaft and change the 3/8 inch to 1/4 inch by changing the screw inside. Change the screw to 1/4 inch and screw the monopod into a regular tripod. At first, I thought that such a design was good. If you need to shoot a little higher, you can replace it with a little, barely. However, after the actual test, I found that I thought more, and then the "pseudo-axis" was very unstable after the connection. After pressing the shutter, it took 5-6 seconds to stand still, and it took a self-timer of 10 seconds or a cell phone remote control. Shooting to avoid shaking - this is indoors. If you scratch a bit of wind outside, look at it and keep it rolling, so this design is good and practical. The manufacturer may know it himself, so call this combination use a "monopod", but I think that if you use it as a monopod, screw it and unscrew it. If you die, it's better to use the monopod with nails directly. Xiaoyuntai can be mounted on the end of a monopod and used as a self-timer lever. However, because the intermediate adapter cannot be screwed down, I can only give up and borrow an official photo directly. The attached mobile phone clip can hold a maximum of 6 inches of mate7. Therefore, apart from Huawei's 7-inch X2 glory, unlike mobile phones, unlike mobile phones, 99% of mobile phones have no problem. In addition sent a Bluetooth shutter remote control. In summary, I feel that this monopod is too tasteless. It is better to only spend 258 yuan to buy a tripod. After watching the appearance, to real shot test. For such inexpensive portable tripods, it is not possible to ask for too much, but it is only required to have sufficient stability. As we all know, the longer the focal length, the higher the stability requirement, and the more stable the scaffold when it is shortened than when it is stretched. So I directly transfer the Pentax's 55-300 dog's head, and then extend the tripod to the longest for testing. If such stability passes, then it would be easy to use a header or wide angle. Shoot a billboard with a straight-line distance of about 1200m (Baidu map measurement distance), focal length 300mm, exposure for 30 seconds, take a look at the central and edge magnification 100%. Five shots were taken consecutively, and five shots were clearly clear and jittery. It can be said that stability is not a problem. Routine summary: Advantages: Cheap, adequate load-bearing, good stability. Disadvantages: Workmanship is slightly owed, the monopod is unstable, and practicality is poor. If you already have a main shelf, and you also need a portable, non-occupied foot stand for traveling without anti-system travel, then this stand is a good value for money. SMP series Bench DC Power Supplies are economical, MOSFETs-based, high switching speed, high power density desktop DC power supplies with output power covering 300W ~ 6KW, and maximum voltage up to 800VDC. Bench DC Power Supplies, Desktop DC Power Supplies, Bench Laboratory Power Supplies, Benchtop AC DC Power Supplies, Bench AC-DC Supplies Yangzhou IdealTek Electronics Co., Ltd. , https://www.idealtekpower.com
Compared with IGBT-based DC switching power supplies, MOSFET-based switching power supplies have a higher switching frequency, making this series Benchtop DC power supplies can use smaller semiconductor devices and LC filter units while ensuring low ripple, high precision, and fast response characteristics of the Benchtop Laboratory Power Supplies DC output. Which gives more space to use a smaller chassis size at the same output power, resulting the high-power density feature of this series Benchtop AC DC power supplies.
The main design purpose of this series of Bench AC-DC power supplies is to fulfill the needs of small laboratory test, precise experiment and universities.
At present, this series of Bench AC DC power supplies below 1KW adopts desktop chassis to match laboratory applications, they are mainly used in LED testing, small electroplating, heating of new materials, electrical component testing and other applications.