Crystal Radio II

The following circuit illustrates an AM/Shortwave Radio Frequency Calibrator Circuit Diagram. This circuit is based on the 74LS93 IC. Features: The .. The AM/Shortwave Radio Frequency Calibrator Circuit utilizes the 74LS93 integrated circuit, which is a 4-bit binary counter. This...

The circuit consists of a radio remote lighting switch utilizing RCM1 type radio-controlled remote control transmitter and receiver components. It features the RCM1A/B component, which facilitates the remote control functionality. Additionally, the design incorporates a remote control transmitter and...

A number of simple FM devices, without the use of a crystal, demonstrate how power and frequency depend on various factors, including supply voltage and stage design. The oscillator stage of these transmitters is broadly termed "voltage dependent," as...

This simple circuit will oscillate with a wide range of crystals. Connect several different types of crystal holders in parallel to improve versatility. The 3 to 40 pF capacitor adjusts crystal frequency over a small range for setting to...

The receiver circuit depicted in the figure requires the insertion of a plug into the radio headphone jack. When the radio receiver detects a signal from the transmitter, an audio signal is output from the jack. This signal is...

Telephone Tone Ringer TA31001 The UTC TA31001 is a bipolar integrated circuit designed for telephone bell replacement. It can also be used as alarms or other alerting devices. By LianShun Electronics Co., Ltd. The UTC TA31001 is a versatile bipolar...