There are lots of these here in SW Florida And probably the rest of FL too. Green tree frogs. They are so small and cute!
The button cell compartment (contacts) wore out in my hand game So, I wired in a 1.5v AA battery holder. It acts as a stand, and the same dry cell battery has been powering this game for 7 years now. The tiny button cells would last around 3 weeks with daily use.
18650s are safer than polymersBoth types are lithium but the flat polymer batteries are more susceptible to explosion from shorting or water. Very dangerous batteries!
Thyristors can look like transistorswith a thyristor, which looks like a transistor, you can create a very simple latching circuit without the use of an on switch. A momentary switch can be used to briefly short the thyristor, turning it off. Fascinating things they are. Momentary...See More »
Im not posting a book here about it but heres a bit on transistorsA transistor is an efficient energy saving version of a relay. It acts as an automatic switch when positive voltage is applied to the base, or a signal, which is voltage. Lets say its a BC547b or 2n2222 equivalent. If the flat side of the transistor...See More »
Are transistors your weakness?They are actually super easy to get right in a circuit. I will explain the details tonight but have to get ready for work lol. Dont let transistors discourage you and creativity in your hobbies. They are very difficult for beginners to grasp but when...See More »
Some components have 2 pins, one being longerIn this case such as in electrolytic capacitors and leds, the longer pin is always the positive pin. You can tell the negative side of rectifier diodes by the gray stripe. That side will only allow incoming negative, or outgoing positive. Its if a...See More »
My pic is a DC motor.Size 140, or "c size" to be exact. These motors are found in toys. Theres appx 60 to 80 windings x 3 of 26 guage enamel coated copper magnet wire around the core. The spindle shaft is 2mm stainless steel lubricated with white lithium grease....See More »
