Square wave generator at one transistor

This invention relates to pulse techniques. Square wave generator comprises a Schmitt trigger (1), a resistor (R) (2), the condenser (K) (3), a further resistor (4). The connection point P (2) and R (3) is connected to the input of the trigger (1), inverted output is connected to the free terminal of P (2), R (4) is connected between the output of the free K (3) and direct access to the trigger 1. Technical result - the reduction in the frequency of the generated pulses while maintaining frequency stability. The school facilities left a lot of old systems­cottages calls. They contain the exact primary mechanical watches, which produce every minute a relatively powerful electric pulse of several ten­tyh seconds.