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Jumat, 06 April 2012

Rangkaian Indikator Level Air

Gambar 1. Skema Rangkaian Level Air
Rakaian level air adalah rangkaian elektronika yang berfungsi untuk mendeteksi tingkat ketinggian air yang mana pada level tertentu akan menghidupkan pompa air secara otomatis. Sehingga dengan bantuan alat ini anda tidak perlu sibuk untuk menyalakan atau mematikan pompa air pada saat penampungan penuh ataupun kosong. Mungkin kalau hanya

Rangkaian Led Flasher 1 Transistor

Here the schematic diagram of one transistor LED flasher. This circuit can be the simplest circuit led flasher over the world.... :D

This is a novel flasher circuit working with a single driver transistor that will take its flash-rate from a flashing LED. The flasher in the photo is 3mm. An ordinary LED is not going to work. The flash rate are not able to be altered by the brightness of the high-bright white LED can be adjusted by replacing the 1k resistor across the 100uF electrolytic to 4k7 or 10k.

Kamis, 05 April 2012

Battery Charger 12v SLA

Before we go into the operation of the SLA Battery Charger circuit, there are a number of points we need to cover about the care and use of Sealed Lead Acid batteries.
Firstly, these batteries must be charged, discharged and stored very carefully.
We normally think batteries can be stored for months (if not years) and they will be available for immediate use.
This is not the case with SLA batteries.
If you store a NEW, full charged SLA battery for 6 months or more, you will find it may be fully discharged.

Cara mengukur dan menghitung Transformator

Transformator (Trafo)
Peralatan kantor sampai peralatan rumah tangga yang menggunakan Trafo (transformator) sebagai power supply atau sumber tegangan. Kebanyakan trafo tersebut adalah jenis step-down yang berfungsi untuk menurunkan tegangan AC (bolak-balik). Trafo jenis ini memiliki kumparan (lilitan) primer lebih banyak daripada kumparan sekunder. Dengan trafo step-down ini, tegangan input PLN 220V-240V diturunkan menjadi 6V, 9V,12V, 15V, atau sesuai kebutuhan, setelah itu disearahkan menjadi tegangan DC.

Rangkaian Inverter 60 Watt

60 Watt Inverter Circuit
Above circuit is a inexpensive completely transistorised inverter circuit ideal for driving medium loads of the order of 40 to 60 watts working with battery of 12V, 15 Ah or bigger power capacity.

Transistors T1 and T2 (BC548) make a 50Hz multivibrator. For having proper frequency, the