Free Simple Circuit Diagram
To generate 50% active factor (duty cycle) using 555 IC, we can use two diodes to separate the charging and the discharging path. With no diodes, we can also generate 50% duty cycle using 555 IC by configuring the circuit as shown in the schematic diagram. The high state period is similar to regular configuration, t1 = 0.693 RA C, […]
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Function generator ranging from 0.1 Hz to 20 MHz can be easily built using MAX038 integrated circuit chip. Here is the most simple implementation of high frequency sine wave generator, and you can easily modify it to generate square wave, or triangle waveform. Here is the schematic diagram of the circuit: In the schematic diagram, you can see A0 (pin […]
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The FM transmitter circuit here works in the broadcast band 88 to 108MHz, and can be used to broadcast audio signals for remote listening. The output power is around -21dBm, and the circuit operates with 3V power supply. Here is the schematic diagram of the circuit: If you want to carry out your portable sound system around the house, this […]
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To make LED works, you need a voltage source that is higher than the LED’s forward bias voltage, and it’s higher that 1.5V (around 2V for red LEDs). Fortunately, now you can make a LED flasher circuit that needs only 1.5V or a single cell battery to work. Here is the schematic diagram of the circuit: The core of this […]
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