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- Reverse Polarity Circuit Example Circuit Reverse polarity circuit example for output voltage is shown below. +VOUT TR1 TR2 PC1 PC2 TR5 TR6 D2 D1 Output A R1 R7 TR7 TR8 R6 PC1 R3 Output B PC2 R2 R4 TR3 R5 R8 ZD2 R9 TR4 ZD1 AUX (+24V) -VOUT RS COM Fig 1 Reverse Polarity Circuit Example Explanation of Operation The polarity can be reversed by applying signal voltage. When the RS terminal is connected to AUX terminal, the output polarity is positive. Conversely, if RS terminal is connected to COM terminal, the output polarity is negative. Table 1 Timing chart Reverse signal TR1 TR2 TR3 TR4 Output A - Output B Low High OFF ON ON OFF ON OFF OFF ON Positive Out Negative Out Reverse polarity signal is designed as 24V (High). Reverse Polarity Circuit Ver.1 H-1 Note Table 2 Component list Table 3 Component value Symbol Component name Mfg. Symbol Value TR1 TR2 TR3 TR4 TR5 TR6 TR7 TR8 ZD1 2SK3135 2SK3135 2SK3135 2SK3135 2SC1815 2SC1815 2SA1015 2SA1015 HZS24NB2 Renesas Renesas Renesas Renesas Toshiba Toshiba Toshiba Toshiba Renesas R1 R2 R3 R4 R5 R6 R7 R8 R9 1.5kΩ 1/4W 47kΩ 1/4W 1.5kΩ 1/4W 1.5kΩ 1/4W 47Ω 1/4W 45kΩ 1/4W 1.5kΩ 1/4W 1.5kΩ 1/4W 47Ω 1/4W ZD2 D1 D2 PC1 PC2 HZS24NB2 1SS120 1SS120 TLP591B TLP591B Renesas Renesas Renesas Toshiba Toshiba TR1 to TR4 should be selected depending on power that system required. Reverse Polarity Circuit Ver.1 H-2
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