fridge circuit diagram

This network wiring tester consists of two components: a transmitter unit, which is powered and installed at the network's starting point, and a passive receiver unit that can be moved from socket to socket. Both units contain eight LEDs,...

This circuit is representative of the typical application of a photomultiplier tube. The circuit depicted is AC coupled; however, if DC coupling is required, the capacitor can be removed, and an appropriate interfacing method should be employed. A common...

The circuit presented is designed to prevent burning one's tongue by monitoring the temperature of coffee. It consists of a voltage regulator, a temperature-to-voltage converter, a comparator, and two LEDs. In general, the circuit operates as follows: if the...

This is a 25-watt basic power amplifier designed for ease of construction at a reasonable cost. It outperforms the standard STK module amplifiers commonly found in mass-market stereo receivers today. The design was initiated to create a 25-watt amplifier...

The conversion of a circuit from NPN to PNP configuration is in progress, along with a switch in polarity. Parts are being ordered for this modification. The conversion from an NPN to a PNP transistor involves several key changes in...

An automatic recording telephone interface circuit is presented, featuring an automatic answering and recording function that requires a reprovisioning or a small solid-state recording chip. The circuit is straightforward, with a quiescent current of less than 20 µA, allowing...