wireless transmitter for ir headphone
No description available.
Direct infrared remote control switch circuit diagram composed of LS-2
The LS-2 remote control switch infrared sensor module is similar to the LS-18 but functions as a reflector. The LS-2 pin diagram and internal block diagram provide insights into its electrical parameters. The operating voltage for the LS-2 remote control...
Bathroom automatic hand dryer circuit
Bathroom automatic hand dryer circuit. The circuit features an LED and a photosensitive transistor (VT) that together form an infrared opto coupler, serving as a signal sensing mechanism. The control element is a 1WH8778 switch integrated circuit. When hands are...
1watt AM/CW 10-meter band transmitter
In this project, you will make a simple 3-stage low-power broadcast-type circuit, using a crystal oscillator integrated circuit and a collector modulated AM oscillator with amplifier. You can connect the circuit to an electret microphone or amplified dynamic microphone. Using...
Fast Audio Peak Limiter
The circuit devised by Phil Allison still has some input voltage limitations, since it is based on a FET. Junction FET VCAs also create considerable distortion, with the worst of it appearing when the signal is attenuated by 6dB. The...
Wireless/Wii Hack for SNES and NES Controllers
The NES version of this modification closely resembles the SNES version, and it is advisable to review that article first for a general understanding of the assembly of these controllers. The primary component required is an original NES controller, which...
Infrared circuits related resources
A computerized infrared remote project is a simple device designed for recording and playing back streams of infrared data, specifically the codes transmitted by remote controls. Software is provided for use in both DOS and Windows environments, along with information...
Selective Preamplifier For Infrared Photodiode Circuit
The circuit utilizes a tuned circuit for frequency selection, designed to operate at approximately 51 kHz. The 2N3565 transistor amplifies the output generated by the tuned circuit.
The described circuit operates on the principle of resonance, where the tuned circuit is...
headphone circuit
This is a simple passive headphone distribution box that functions effectively. It has been utilized in various recording studios and constructed for multiple users. The absence of active components ensures minimal failure risk and a quick assembly process. The box...
Transmitter Negative Key Line Keyer
Using an NTE288 (or ECG288, GE223, or SK3434), this circuit can key a negative line up to -300 V maximum. Do not use this circuit to key a vacuum-tube amplifier that draws grid current because the keying transistor might be...