Free Simple Circuit Diagram
We can use a voltage-controlled current source to implement a laser diode driver. Compared with a a Switched (PWM) drivers, this simple linear laser diode driver provides cleaner drive current. Here is the schematic diagram of the circuit: As the basic of this laser diode driver, this circuit uses a Howland current pump with a current booster. The output of […]
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To optimally control the charge and hold cycle for sealed lead acid battery, UC2906 series of battery charger controllers is used by all of the necessary circuitry. These integrated circuits control and monitor both the output voltage and current of the charger by way of three separate charge states; a precision float-charge, or standby state, a controlled over-charge, and a […]
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This is a simple high voltage inverter circuit. It is uses NPN transistor type 2N3055. This circuit used to invert low voltage to high voltage. Besides that, this circuit uses flyback transformer that can obtained from B/W or color TV or computer monitor. R1 (110 Ohm/5W) and R2 (27 Ohm/5W) are used to limit the current so as to reduce […]
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This is a power supply circuit that produce voltage 12 to 24 V. It is very simple, doesn’t need regulator just bridge rectifier, filter capacitor and transformer. A bridge rectifier makes use of four diodes in a bridge arrangement to achieve full-wave rectification. This circuit will give you 15 VDC at up to 3A. To prevent damage to circuit or […]
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