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Fig. 1: Circuit for infrared illuminator

Fig. 1: Circuit for infrared illuminator

Standby charger NB : Ketiga charger diatas bisa digunakan untuk charging aki 6 V, anda hanya perlu mengganti dioda Zener dengan Zener 7.5V, dan menggunakan Trafo/Source 9V DC. Untuk Charger #2 maka R1 juga di ganti dengan resistor 330 Ohm - 470 Ohm.

Standby charger NB : Ketiga charger diatas bisa digunakan untuk charging aki 6 V, anda hanya perlu mengganti dioda Zener dengan Zener 7.5V, dan menggunakan Trafo/Source 9V DC. Untuk Charger #2 maka R1 juga di ganti dengan resistor 330 Ohm - 470 Ohm.

A low cost step-up converter

Electronic circuits, an undervoltage indicator, midi circuitry, a stepup converter, IR remote control signals through a phone line and more.

Electronics Projects, Slide Rule, Vacations, Holidays, Vacation, Travel

REVISTA ELEKTRONIKA: Ding Dong de Bell Sound Generator

This is ding dong sound generator circuit is designed using 555 timer IC in astable mode. It can be used as doorbell. Read this post for complete details.

Este circuito detector de lluvia con 4093B, da el aviso de el momento en que se inicia la lluvia para evitar algunas situaciones o favorecer otras.

Este circuito detector de lluvia con 4093B, da el aviso de el momento en que se inicia la lluvia para evitar algunas situaciones o favorecer otras.

Diy Electronics, Electronics Projects, Electrical Engineering, Ham Radio, Physics, Welding, Knowledge, Medicine, Beading, Health, School, Physical Science, Power Engineering, Soldering, Welding Tools, Welding Projects, Facts

Simple DC Over-voltage Protector Circuit Diagram

Simple DC Over-voltage Protector Circuit Diagram

Simple FM transmitter

This is probably become the simplest radio frequency RF transmitter that you will find anywhere.