Original Design Schematic of Solar Seeker

A project is underway to determine the number of sun hours available at a specific location and to track this data over time as part of solar power installation design. The concept involves utilizing a light detector exposed to sunlight...

Light-Controlled Pond Pump

This circuit was designed to control a pump in a garden pond, enabling it to automatically activate at dawn and deactivate at dusk. The circuit utilizes a light-dependent resistor (LDR) to detect ambient light levels, which serves as the primary sensor...

Light/Dark Detector relay

This handy little circuit can tell the difference between darkness and light, making it very useful for switching on and off signs, porch lights or other things when it gets dark or light. More: R1 Adjusts sensitivity The circuit described is...

Chloroplast solar engines

The heart of the Chloroplast is the Motorola MC34164-3 Micro power Undervoltage Sensing Circuit (U1 in the following diagram). In normal use, this component monitors the voltage at pin 2, and applies a ground at pin 1 (out) when the...

Tritium Solar engine

The Tritium circuit was the first type 3 SE. As such, it is quite experimental and should be regarded as a prototype rather than the state of the art. Nevertheless, it does function reasonably well, and in some circumstances outperforms...

Solar Battery Charger Circuits

This is a simple and cost-effective solar battery charger that can be constructed by hobbyists. It has some limitations compared to other similar controllers, but it also provides several benefits. While primarily designed for charging lead-acid batteries, it can also...

Solar Garden LED Lighting

The circuit consists of two stages. The first stage is a switch or cut-off device. It detects a voltage above 0.7V from the solar panel, and the resistance between its collector-emitter terminals reduces to a very small value. The 10k...

Solar Engine

Well the most common use is in a solaroller which is a small wheeled car that charges up and then moves in a quick burst of speed. Since you can only use motors and coils with this circuit robots built...

Solar Regulator

The SIMD1 was enhanced in the Solar Regulator version which supplies a constant 2V after triggering and permits driving LEDs without using current limiting resistors with constant brightness. Note that you can use this Low Drop Out (LDO) linear regulator...