On my next visit, my five-year-old grandson shouts right at the door: “Hello, Grandfather! I brought you work, my favorite machine gun stopped shooting, but I really need it and right away.
Can you handle it? ” The question alerted me - before the grandson did not doubt my omnipotence - a clear attempt on my unshakable authority from the suggestion of adults. Stake, dad with mom!
Here's what happened: The next time the batteries were changed, the machine began to shoot continuously, dad hit the machine on his knee and the machine was silent forever, although the batteries were replaced with completely new ones. The machine was lying on the balcony for about a year and during the next big off-season cleaning they wanted to throw away the toy, but the grandson insisted on showing the machine to his grandfather and let him pass the toy a sentence. This, fundamentally, changes all things! The machine was disassembled and it turned out the following:
1. The microswitch is broken.
2. When hitting my father’s knee, the plastic gear jammed in the machine,
the gear stopped the electric motor and fresh batteries helped the motor burn out.
3. Of the eight contacts in the battery compartment, five are rotted by leaking electrolyte from the batteries.
Four 6-volt finger-type batteries, LEDs through a microcircuit, and limiting resistances (resistors) blinked painlessly in a pulsed mode, but did not overload three-volt micromotors. Such motors
I didn’t have it in stock and it was decided to do without it, fortunately, there were enough sound and light effects without it. And if there is no main source of energy consumption, then you can make a simple converter that runs on one finger battery - in the battery compartment there are just three contacts left.
When I was looking for a micro button,
I stumbled upon two D-0.55 disk batteries as early as 1994
and to the Chinese Dc-Dc modular voltage converter from 0.9V to 5V to stable 5 volts.
Soldered to one battery
two outputs and charged from usb computer output through a series-connected resistor of 22 ohms.
When the battery was charged, I soldered everything with a soldering iron,
hid inside the blaster case
and assembled the blaster itself.
Everything shot perfectly, blinked and howled, now the grandson with such power supply in the blaster will come out victorious from any battle with space aliens.
