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Label: BC337

How do we build a "low cost" fast charger for NiCd and NiMH elements?

December 4, 2021 Dan Florian Alx DIY electronic kits, ELECTROKITS projects 2 comments

Reading time: 2 minute A cheap charger for charging batteries with Ni-Cd or NiMH elements is easy to build using the 555 timer and a few transistors. Charging is done quickly, and the electronic scheme ensures the elimination of the unwanted memory effect in NiCd cells.

 1,439 total hits, 5 hits today

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Minorga de lumini - IPRS Baneasa - Prospect 8202

Minorga de lumini - IPRS Baneasa - Prospect 8202

February 25, 2021 Dan Florian Alx DIY electronic kits, IPRS Baneasa projects 19 comments

Reading time: 5 minute This vintage DIY electronic kit is a light organ with 3 projectors (bulbs), with the light effects rate adjustable by a rotary knob. The bulbs will light up depending on the intensity of the input signal and its frequency, producing special lighting effects.

 1,901 total hits, 5 hits today

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Siren "UAU-UAU" - IPRS Baneasa - Prospect 8101

Siren "UAU-UAU" - IPRS Baneasa - Prospect 8101

February 25, 2021 Dan Florian Alx DIY electronic kits, IPRS Baneasa projects 2 comments

Reading time: 3 minute The assembly is easy to do, being practically an interactive electronic kit for children. The scheme of this vintage DIY electronic kit consists of two stable tilting circuits (CBA).

 1,281 total hits, 1 hits today

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Impulse switch made with transistors

Impulse switch made with transistors - Interruption of another circuit or electrical charges without timing

February 23, 2021 Dan Florian Alx DIY electronic kits, ELECTROKITS projects 2 comments

Reading time: <1 minut This project can be considered the transistor-based replacement version of the CMOS 4069 integrated circuit. The assembly interrupts another circuit or electrical charges without timing.

 1,119 total hits, 7 hits today

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The latest comments

  • Marius B. on Top 10 resistors for harsh environments
    Alex, if I remember correctly, I've had this discussion before. Yes, IPRS has manufactured components in 5 classes. Aerospace, nuclear, military, and research
  • Balauta M. on Top 10 resistors for harsh environments
    Add, thyristors for ASEA SWEDEN. There are other destinations, for military use only. Thanks for the additions, I have some of the information
  • Alexander I. on Top 10 resistors for harsh environments
    Microwave power components (ICCE), microprocessors.
  • Dan Florian Alx on Top 10 resistors for harsh environments
    Interesting. These embassies / exchanges are still practiced today. I would be curious to know which were the most expensive custom components delivered externally.
  • Alexander I. on Top 10 resistors for harsh environments
    Yes, the terminal holder on which the chips were mounted, the housing or the closing cover, etc.

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tag Cloud

2N2222 2N3055 antenna Yagi sequential ignition AT89C2051 AT90S1200 AT90S2313 BC337 BC547 BC557 BD912 BS170 CD4011 CD4013 CD4017 CD4093 stable circuit Zener diode Electronics Bucharest audio frequency generator HD44780 IPRS Baneasa acoustic enclosures electronic fireflies LM317 LM317T LM324 LM335 LM358 LM555 LM741 LM3886 LM7805 dynamic light MAX038 MAX232 NE555 organ of lights PIC16F84 </strong> Microcontroller. PIC16F628 </strong> Microcontroller. PIC16F877 </strong> Microcontroller. time relays stabilizing schemes voltage stabilizers the bipolar transistor

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